Fatto generale: 1625 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 1625 is the number of circular permutations of a set with 8 elements with no element being mapped to its successor.
Trivia: 1625 is an uninteresting number.
Data storica: June 12th is the day in 1993 that an election takes place in Nigeria which and is later annulled by the military Government led by Ibrahim Babangida.