Step 1: Divide the number into separate digits:
14225 => 1 4 2 2 5
Step 2: Calculate the distance between each digit and the next (the last digit with the first):
1 to 4 = 3
4 to 2 = 2
2 to 2 = 0
2 to 5 = 3
5 to 1 = 4
Step 3: Combine the filters to a string:
3 2 0 3 4 = 32034