Fatto generale: 8485 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 8485 is an uninteresting number.
Trivia: 8485 is a boring number.
Data storica: March 25th is the day in 1965 that Civil rights activists led by Martin Luther King, Jr. successfully complete their 4-day 50-mile march from Selma to the capitol in Montgomery, Alabama.