Divisor 25535

To determine if any number is divisible by 25535, you must apply 2 tests successively. If all of them 'pass' - that is, if your number is divisible by 5 and 5107 - then it is divisible by 25535.

The following tests must pass:

• Test if a number is divisible by 5
• The "Subvertadown Test" for Divisibility by 5107

Easy!