225956988 has 18 divisors (see below), whose sum is σ = 571169144. Its totient is φ = 75318984.

The previous prime is 225956981. The next prime is 225956989. The reversal of 225956988 is 889659522.

225956988 is a `hidden beast` number, since 22 + 59 + 569 + 8 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225956981) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3138256 + ... + 3138327.

Almost surely, 2^225956988 is an apocalyptic number.

It is an amenable number.

225956988 is an abundant number, since it is smaller than the sum of its proper divisors (345212156).

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

225956988 is a wasteful number, since it uses less digits than its factorization.

225956988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6276593 (or 6276588 counting only the distinct ones).

The product of its digits is 3110400, while the sum is 54.

The square root of 225956988 is about 15031.8657524607. The cubic root of 225956988 is about 609.0812901591.

The spelling of 225956988 in words is "two hundred twenty-five million, nine hundred fifty-six thousand, nine hundred eighty-eight".