225432245172 has 24 divisors (see below), whose sum is σ = 548878510656. Its totient is φ = 71876947648.

The previous prime is 225432245147. The next prime is 225432245221. The reversal of 225432245172 is 271542234522.

It is a self number, because there is not a number n which added to its sum of digits gives 225432245172.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 408391473 + ... + 408392024.

It is an arithmetic number, because the mean of its divisors is an integer number (22869937944).

Almost surely, 2^225432245172 is an apocalyptic number.

It is an amenable number.

225432245172 is an abundant number, since it is smaller than the sum of its proper divisors (323446265484).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

225432245172 is a wasteful number, since it uses less digits than its factorization.

225432245172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 816783527 (or 816783525 counting only the distinct ones).

The product of its digits is 268800, while the sum is 39.

Adding to 225432245172 its reverse (271542234522), we get a palindrome (496974479694).

The spelling of 225432245172 in words is "two hundred twenty-five billion, four hundred thirty-two million, two hundred forty-five thousand, one hundred seventy-two".