Fatto matematico: 4485 is the number of 3×3 sliding puzzle positions that require exactly 16 moves to solve starting with the hole in a corner.
Trivia: 4485 is a boring number.
Data storica: April 11th is the day in 1951 that the Stone of Scone, the stone upon which Scottish monarchs were traditionally crowned, is found on the site of the altar of Arbroath Abbey.