225885165 has 32 divisors (see below), whose sum is σ = 395280000. Its totient is φ = 109240320.

The previous prime is 225885157. The next prime is 225885173. The reversal of 225885165 is 561588522.

It is an interprime number because it is at equal distance from previous prime (225885157) and next prime (225885173).

It is not a de Polignac number, because 225885165 - 2³ = 225885157 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 72561 + ... + 75609.

It is an arithmetic number, because the mean of its divisors is an integer number (12352500).

Almost surely, 2^225885165 is an apocalyptic number.

It is an amenable number.

225885165 is a deficient number, since it is larger than the sum of its proper divisors (169394835).

225885165 is a wasteful number, since it uses less digits than its factorization.

225885165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3517.

The product of its digits is 192000, while the sum is 42.

The square root of 225885165 is about 15029.4765377907. The cubic root of 225885165 is about 609.0167488471.

It can be divided in two parts, 225885 and 165, that multiplied together give a square (37271025 = 6105²).

The spelling of 225885165 in words is "two hundred twenty-five million, eight hundred eighty-five thousand, one hundred sixty-five".