225604665 has 48 divisors (see below), whose sum is σ = 459426240. Its totient is φ = 100967040.

The previous prime is 225604661. The next prime is 225604667. The reversal of 225604665 is 566406522.

It is not a de Polignac number, because 225604665 - 2² = 225604661 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (225604661) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11095 + ... + 23964.

It is an arithmetic number, because the mean of its divisors is an integer number (9571380).

Almost surely, 2^225604665 is an apocalyptic number.

It is an amenable number.

225604665 is an abundant number, since it is smaller than the sum of its proper divisors (233821575).

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

225604665 is a wasteful number, since it uses less digits than its factorization.

225604665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35094 (or 35091 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The square root of 225604665 is about 15020.1419766925. The cubic root of 225604665 is about 608.7645558685.

It can be divided in two parts, 22560 and 4665, that added together give a square (27225 = 165²).

The spelling of 225604665 in words is "two hundred twenty-five million, six hundred four thousand, six hundred sixty-five".