225520530 has 32 divisors (see below), whose sum is σ = 559915200. Its totient is φ = 58064832.

The previous prime is 225520511. The next prime is 225520573. The reversal of 225520530 is 35025522.

225520530 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 225520530.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 128740 + ... + 130479.

It is an arithmetic number, because the mean of its divisors is an integer number (17497350).

Almost surely, 2^225520530 is an apocalyptic number.

225520530 is an abundant number, since it is smaller than the sum of its proper divisors (334394670).

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

225520530 is a wasteful number, since it uses less digits than its factorization.

225520530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259258.

The product of its (nonzero) digits is 3000, while the sum is 24.

The square root of 225520530 is about 15017.3409763513. The cubic root of 225520530 is about 608.6888707105.

The spelling of 225520530 in words is "two hundred twenty-five million, five hundred twenty thousand, five hundred thirty".