225756165 has 16 divisors (see below), whose sum is σ = 366602688. Its totient is φ = 118605696.

The previous prime is 225756163. The next prime is 225756169. The reversal of 225756165 is 561657522.

It is not a de Polignac number, because 225756165 - 2¹ = 225756163 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225756161) 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, 111312 + ... + 113321.

It is an arithmetic number, because the mean of its divisors is an integer number (22912668).

Almost surely, 2^225756165 is an apocalyptic number.

It is an amenable number.

225756165 is a deficient number, since it is larger than the sum of its proper divisors (140846523).

225756165 is a wasteful number, since it uses less digits than its factorization.

225756165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224708.

The product of its digits is 126000, while the sum is 39.

The square root of 225756165 is about 15025.1843582700. The cubic root of 225756165 is about 608.9007929943.

The spelling of 225756165 in words is "two hundred twenty-five million, seven hundred fifty-six thousand, one hundred sixty-five".