Fatto generale: 81625 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 81625 is an unremarkable number.
Trivia: 81625 is a boring number.
Data storica: June 25th is the day in 1978 that the rainbow flag representing gay pride is flown for the first time in the San Francisco Gay Freedom Day Parade.