225152631 has 12 divisors (see below), whose sum is σ = 354786120. Its totient is φ = 136456080.

The previous prime is 225152623. The next prime is 225152657. The reversal of 225152631 is 136251522.

It is a happy number.

225152631 is a `hidden beast` number, since 2 + 25 + 1 + 5 + 2 + 631 = 666.

It is not a de Polignac number, because 225152631 - 2³ = 225152623 is a prime.

It is a super-2 number, since 2×225152631² = 101387414492444322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 225152595 and 225152604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225152621) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1137036 + ... + 1137233.

It is an arithmetic number, because the mean of its divisors is an integer number (29565510).

Almost surely, 2^225152631 is an apocalyptic number.

225152631 is a deficient number, since it is larger than the sum of its proper divisors (129633489).

225152631 is a wasteful number, since it uses less digits than its factorization.

225152631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2274286 (or 2274283 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 225152631 is about 15005.0868374695. The cubic root of 225152631 is about 608.3576992221.

The spelling of 225152631 in words is "two hundred twenty-five million, one hundred fifty-two thousand, six hundred thirty-one".