Step 1: Divide the number into separate digits:
17595 => 1 7 5 9 5
Step 2: Calculate the distance between each digit and the next (the last digit with the first):
1 to 7 = 6
7 to 5 = 2
5 to 9 = 4
9 to 5 = 4
5 to 1 = 4
Step 3: Combine the filters to a string:
6 2 4 4 4 = 62444