225522120 has 32 divisors (see below), whose sum is σ = 676566720. Its totient is φ = 60139200.

The previous prime is 225522113. The next prime is 225522137. The reversal of 225522120 is 21225522.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 939556 + ... + 939795.

It is an arithmetic number, because the mean of its divisors is an integer number (21142710).

Almost surely, 2^225522120 is an apocalyptic number.

225522120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

225522120 is an abundant number, since it is smaller than the sum of its proper divisors (451044600).

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

225522120 is a wasteful number, since it uses less digits than its factorization.

225522120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1879365 (or 1879361 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 225522120 is about 15017.3939150573. The cubic root of 225522120 is about 608.6903011982.

Adding to 225522120 its reverse (21225522), we get a palindrome (246747642).

The spelling of 225522120 in words is "two hundred twenty-five million, five hundred twenty-two thousand, one hundred twenty".