285 is the 9th
square pyramidal number. That means it is the sum of a number of consecutive
perfect squares starting with 1. For 285, it is the sum of all of the single digits' perfect squares.[2]
285 is the number of variations possible with a
binary rooted tree with 13 points. A binary rooted tree means that it always begins with 1 point that is rooted. From there, each point can branch in up to two directions.[3]
On October 7, 2015, Camelot UK Lotteries Limited achieved the
Guinness World Record for the longest champagne cork popping relay.[11]
The
Guinness World Record for the greatest number of people in an online video toast chain as of December 16, 2022, is 285. It was achieved in
Cereser, Brazil.[12]
On April 12, 2018, the Narraghmore Vintage Club received the Guinness World Record for having the largest parade of 285 tractors