225163660 has 12 divisors (see below), whose sum is σ = 472843728. Its totient is φ = 90065456.

The previous prime is 225163651. The next prime is 225163733. The reversal of 225163660 is 66361522.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5629072 + ... + 5629111.

It is an arithmetic number, because the mean of its divisors is an integer number (39403644).

Almost surely, 2^225163660 is an apocalyptic number.

225163660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

225163660 is an abundant number, since it is smaller than the sum of its proper divisors (247680068).

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

225163660 is a wasteful number, since it uses less digits than its factorization.

225163660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11258192 (or 11258190 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 225163660 is about 15005.4543416719. The cubic root of 225163660 is about 608.3676324357.

The spelling of 225163660 in words is "two hundred twenty-five million, one hundred sixty-three thousand, six hundred sixty".