225572120 has 32 divisors (see below), whose sum is σ = 523912320. Its totient is φ = 87317760.

The previous prime is 225572111. The next prime is 225572141. The reversal of 225572120 is 21275522.

It is a self number, because there is not a number n which added to its sum of digits gives 225572120.

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, 89717 + ... + 92196.

It is an arithmetic number, because the mean of its divisors is an integer number (16372260).

Almost surely, 2^225572120 is an apocalyptic number.

225572120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

225572120 is an abundant number, since it is smaller than the sum of its proper divisors (298340200).

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

225572120 is a wasteful number, since it uses less digits than its factorization.

225572120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181955 (or 181951 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 26.

The square root of 225572120 is about 15019.0585590442. The cubic root of 225572120 is about 608.7352816582.

The spelling of 225572120 in words is "two hundred twenty-five million, five hundred seventy-two thousand, one hundred twenty".