225633566 has 8 divisors (see below), whose sum is σ = 338516184. Its totient is φ = 112794840.

The previous prime is 225633553. The next prime is 225633587. The reversal of 225633566 is 665336522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×225633566² = 101821012211752712, which contains 22 as substring.

It is a congruent number.

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, 9581 + ... + 23303.

It is an arithmetic number, because the mean of its divisors is an integer number (42314523).

Almost surely, 2^225633566 is an apocalyptic number.

225633566 is a deficient number, since it is larger than the sum of its proper divisors (112882618).

225633566 is a wasteful number, since it uses less digits than its factorization.

225633566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21946.

The product of its digits is 194400, while the sum is 38.

The square root of 225633566 is about 15021.1040206770. The cubic root of 225633566 is about 608.7905499427.

The spelling of 225633566 in words is "two hundred twenty-five million, six hundred thirty-three thousand, five hundred sixty-six".