225744165 has 40 divisors (see below), whose sum is σ = 405804960. Its totient is φ = 120058848.

The previous prime is 225744163. The next prime is 225744193. The reversal of 225744165 is 561447522.

It is a happy number.

225744165 is a `hidden beast` number, since 22 + 574 + 4 + 1 + 65 = 666.

225744165 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 225744165 - 2¹ = 225744163 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225744163) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 221026 + ... + 222044.

It is an arithmetic number, because the mean of its divisors is an integer number (10145124).

Almost surely, 2^225744165 is an apocalyptic number.

It is an amenable number.

225744165 is a deficient number, since it is larger than the sum of its proper divisors (180060795).

225744165 is a wasteful number, since it uses less digits than its factorization.

225744165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1583 (or 1574 counting only the distinct ones).

The product of its digits is 67200, while the sum is 36.

The square root of 225744165 is about 15024.7850234205. The cubic root of 225744165 is about 608.8900041579.

The spelling of 225744165 in words is "two hundred twenty-five million, seven hundred forty-four thousand, one hundred sixty-five".