Step 1: Divide the number into separate digits:
82586 => 8 2 5 8 6
Step 2: Calculate the distance between each digit and the next (the last digit with the first):
8 to 2 = 6
2 to 5 = 3
5 to 8 = 3
8 to 6 = 2
6 to 8 = 2
Step 3: Combine the filters to a string:
6 3 3 2 2 = 63322