225518656 has 28 divisors (see below), whose sum is σ = 488198160. Its totient is φ = 102508160.

The previous prime is 225518653. The next prime is 225518669. The reversal of 225518656 is 656815522.

It is a super-3 number, since 3×225518656³ (a number of 26 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (225518653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 159466 + ... + 160873.

Almost surely, 2^225518656 is an apocalyptic number.

It is an amenable number.

225518656 is an abundant number, since it is smaller than the sum of its proper divisors (262679504).

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

225518656 is a wasteful number, since it uses less digits than its factorization.

225518656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320362 (or 320352 counting only the distinct ones).

The product of its digits is 144000, while the sum is 40.

The square root of 225518656 is about 15017.2785816872. The cubic root of 225518656 is about 608.6871847056.

The spelling of 225518656 in words is "two hundred twenty-five million, five hundred eighteen thousand, six hundred fifty-six".