Hecho general: 14509 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Hecho matemático: 14509 is an unremarkable number.
Trivia: 14509 is an unremarkable number.
Fecha histórica: September 21st is the day in 2003 that Galileo mission is terminated by sending the probe into Jupiter's atmosphere, where it is crushed by the pressure at the lower altitudes.