225634128 has 40 divisors (see below), whose sum is σ = 583944768. Its totient is φ = 75075072.

The previous prime is 225634099. The next prime is 225634207. The reversal of 225634128 is 821436522.

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, 24501 + ... + 32427.

Almost surely, 2^225634128 is an apocalyptic number.

It is an amenable number.

225634128 is an abundant number, since it is smaller than the sum of its proper divisors (358310640).

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

225634128 is a wasteful number, since it uses less digits than its factorization.

225634128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8531 (or 8525 counting only the distinct ones).

The product of its digits is 23040, while the sum is 33.

The square root of 225634128 is about 15021.1227276792. The cubic root of 225634128 is about 608.7910553935.

The spelling of 225634128 in words is "two hundred twenty-five million, six hundred thirty-four thousand, one hundred twenty-eight".