225589665 has 16 divisors (see below), whose sum is σ = 412507008. Its totient is φ = 103126656.

The previous prime is 225589657. The next prime is 225589669. The reversal of 225589665 is 566985522.

225589665 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 225589665 - 2³ = 225589657 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (225589669) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1074132 + ... + 1074341.

It is an arithmetic number, because the mean of its divisors is an integer number (25781688).

Almost surely, 2^225589665 is an apocalyptic number.

It is an amenable number.

225589665 is a deficient number, since it is larger than the sum of its proper divisors (186917343).

225589665 is a wasteful number, since it uses less digits than its factorization.

225589665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2148488.

The product of its digits is 1296000, while the sum is 48.

The square root of 225589665 is about 15019.6426388912. The cubic root of 225589665 is about 608.7510637263.

It can be divided in two parts, 22558 and 9665, that added together give a palindrome (32223).

The spelling of 225589665 in words is "two hundred twenty-five million, five hundred eighty-nine thousand, six hundred sixty-five".