125 (number)

125 is the natural number following 124 and preceding 126.

Number|number = 125
range = 120
cardinal = one hundred [and] twenty-five
ordinal = th
ordinal text = one hundred [and] twenty-fifth
numeral = 125
factorization = $5^3$
prime =
divisor = 1, 5, 25, 125
roman = CXXV
unicode =
greek prefix =
latin prefix =
bin = 1111101
oct =
duo =
hex = 7D
misc =

In mathematics

One hundred [and] twenty five is the cube of 5. It can be expressed as a sum of two squares in two different ways, 125 = 10² + 5² = 11² + 2².

125 and 126 form a Ruth-Aaron pair under the second definition in which repeated prime factors are counted as often as they occur.

Like so many other powers of 5, it is a Friedman number in base 10 since 125 = 5^{1 + 2}.

In the military

* United States Air National Guard 125th Special Tactics Squadron unit in Portland, Oregon
* United States Air Force 125th Fighter Wing is an Air National Guard unit located at Jacksonville International Airport, Florida
* Piasecki H-21 Workhorse/Shawnee is a Arctic rescue helicopter
* United States Navy VAW-125 squadron at Naval Air Station, Norfolk, Virginia
* United States Navy Strike Fighter Squadron 125 (VFA-125) strike fighter squadron at Naval Air Station, Lemoore, California
* USNS Mission San Jose (T-AO-125) was a United States Navy Mission Buenaventura class fleet oiler fleet oilers during World War II
* USS Tide (AM-125) was a United States Navy Auk-class minesweeper for removing mines from minefields laid in the water
* Northrop YC-125 Raider utility transport plane

In music

* Opus 125 is the ninth symphony of Ludwig van Beethoven, the longest symphony to the time of its completion, the first symphony to use a chorus, and Beethoven's last complete symphony
* Small Talk at 125th & Lenox was the debut album of Gil Scott-Heron in 1970

In TV and radio

* The TV series Cagney & Lacey ran on CBS from 1982 to 1988 for 125 episodes
* The TV series Reba ran on the WB Network and the CW Television Network from 2001 to 2007 for 125 episodes
* Channel 125 on Sirius Satellite Radio is Sports Play-by-Play 2
* Channel 125 on XM Radio is The Weather Channel

In transportation

* The Fiat 125 automobile
* The Honda XRM 125 motorcycle
* The Yamaha YZ125 is a 125 cc two-stroke motorcycle for motocross riding
* The Harlem-125th Street Metro-North Railroad station serves residents of the Harlem neighborhood of Manhattan, New York
* The InterCity 125, sometimes referred to simply as "one two five"; a British high-speed train
* New Jersey Transit bus route 125
* London Buses route 125 is a Transport for London contracted bus route in London
* M-125 state trunkline route in Michigan
* Mexican Federal Highway 125
* Highway 125 in Ontario, Canada
* Pan Am Flight 125 from London’s Heathrow Airport to New York's John F. Kennedy International Airport which had pressurization problems on March 10, 1987
* The 125th Street Bridge crosses the Mississippi River in the Minnesota
* STS-125 is a planned Space Shuttle Atlantis mission to launch no earlier than August 28, 2008

In other fields

125 is also:
* The year AD 125 or 125 BC
* 125 AH is a year in the Islamic calendar that corresponds to 742 – 743 CE
* 125 Liberatrix is a Main belt asteroid
* The atomic number of the yet-to-be-discovered element Unbipentium
* Puerto Rico ranks #125 in world population
* Sonnet 125 by William Shakespeare
* 125th Street, Manhattan, New York City
* CA-125, also known as CA125, is an abbreviation for cancer antigen 125
* 125 High Street is a 30-floor highrise in Boston
* The 1998 New York Yankees won 125 games (114 in the regular season, 7 in the playoffs and a 4-game sweep in the World Series)
* The 125th Kentucky Derby was won by Charismatic on May 1, 1999
* The 125th Westminster Kennel Club Dog Show was won by Ch. Special Times Just Right, a Bichon Frise on February 13, 2001

See also

* 125th Anniversary of the Confederation of Canada Medal
* 125th Street, New York City Subway stations
* List of highways numbered 125
* United Nations Security Council Resolution 125

References

* Wells, D. "The Penguin Dictionary of Curious and Interesting Numbers" London: Penguin Group. (1987): 136