225000165 has 32 divisors (see below), whose sum is σ = 389321856. Its totient is φ = 110304000.

The previous prime is 225000163. The next prime is 225000173. The reversal of 225000165 is 561000522.

It is not a de Polignac number, because 225000165 - 2¹ = 225000163 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225000161) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 46647 + ... + 51243.

It is an arithmetic number, because the mean of its divisors is an integer number (12166308).

Almost surely, 2^225000165 is an apocalyptic number.

It is an amenable number.

225000165 is a deficient number, since it is larger than the sum of its proper divisors (164321691).

225000165 is a wasteful number, since it uses less digits than its factorization.

225000165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4869.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 225000165 is about 15000.0054999990. The cubic root of 225000165 is about 608.2203482334.

Adding to 225000165 its reverse (561000522), we get a palindrome (786000687).

The spelling of 225000165 in words is "two hundred twenty-five million, one hundred sixty-five", and thus it is an aban number.