225131312 has 40 divisors (see below), whose sum is σ = 499423392. Its totient is φ = 96307200.

The previous prime is 225131293. The next prime is 225131327. The reversal of 225131312 is 213131522.

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, 72512 + ... + 75552.

Almost surely, 2^225131312 is an apocalyptic number.

It is an amenable number.

225131312 is an abundant number, since it is smaller than the sum of its proper divisors (274292080).

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

225131312 is a wasteful number, since it uses less digits than its factorization.

225131312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3717 (or 3711 counting only the distinct ones).

The product of its digits is 360, while the sum is 20.

The square root of 225131312 is about 15004.3764282292. The cubic root of 225131312 is about 608.3384974520.

Adding to 225131312 its reverse (213131522), we get a palindrome (438262834).

The spelling of 225131312 in words is "two hundred twenty-five million, one hundred thirty-one thousand, three hundred twelve".