Fatto generale: 2485 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 2485 is the number of planar partitions of 13.
Trivia: 2485 is an uninteresting number.
Data storica: October 20th is the day in 1904 that Chile and Bolivia sign the Treaty of Peace and Friendship, delimiting the border between the two countries.