225516188 has 18 divisors (see below), whose sum is σ = 397011384. Its totient is φ = 112086744.

The previous prime is 225516163. The next prime is 225516211. The reversal of 225516188 is 881615522.

225516188 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 486845 + ... + 487307.

It is an arithmetic number, because the mean of its divisors is an integer number (22056188).

Almost surely, 2^225516188 is an apocalyptic number.

It is an amenable number.

225516188 is a deficient number, since it is larger than the sum of its proper divisors (171495196).

225516188 is an equidigital number, since it uses as much as digits as its factorization.

225516188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1193 (or 728 counting only the distinct ones).

The product of its digits is 38400, while the sum is 38.

The square root of 225516188 is about 15017.1964094501. The cubic root of 225516188 is about 608.6849642752.

The spelling of 225516188 in words is "two hundred twenty-five million, five hundred sixteen thousand, one hundred eighty-eight".