225469165 has 4 divisors (see below), whose sum is σ = 270563004. Its totient is φ = 180375328.

The previous prime is 225469159. The next prime is 225469177. The reversal of 225469165 is 561964522.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 61168041 + 164301124 = 7821^2 + 12818^2 .

It is a cyclic number.

It is not a de Polignac number, because 225469165 - 2⁷ = 225469037 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22546912 + ... + 22546921.

It is an arithmetic number, because the mean of its divisors is an integer number (67640751).

Almost surely, 2^225469165 is an apocalyptic number.

It is an amenable number.

225469165 is a deficient number, since it is larger than the sum of its proper divisors (45093839).

225469165 is an equidigital number, since it uses as much as digits as its factorization.

225469165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45093838.

The product of its digits is 129600, while the sum is 40.

The square root of 225469165 is about 15015.6306893850. The cubic root of 225469165 is about 608.6426551430.

The spelling of 225469165 in words is "two hundred twenty-five million, four hundred sixty-nine thousand, one hundred sixty-five".