225645580 has 24 divisors (see below), whose sum is σ = 474178320. Its totient is φ = 90196800.

The previous prime is 225645551. The next prime is 225645611. The reversal of 225645580 is 85546522.

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, 36730 + ... + 42430.

It is an arithmetic number, because the mean of its divisors is an integer number (19757430).

Almost surely, 2^225645580 is an apocalyptic number.

225645580 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

225645580 is an abundant number, since it is smaller than the sum of its proper divisors (248532740).

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

225645580 is a wasteful number, since it uses less digits than its factorization.

225645580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7689 (or 7687 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 37.

The square root of 225645580 is about 15021.5039193817. The cubic root of 225645580 is about 608.8013548952.

The spelling of 225645580 in words is "two hundred twenty-five million, six hundred forty-five thousand, five hundred eighty".