225170165 has 8 divisors (see below), whose sum is σ = 294768288. Its totient is φ = 163760080.

The previous prime is 225170149. The next prime is 225170177. The reversal of 225170165 is 561071522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 225170165 - 2⁴ = 225170149 is a prime.

It is a super-2 number, since 2×225170165² = 101403206412254450, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 2046947 + ... + 2047056.

It is an arithmetic number, because the mean of its divisors is an integer number (36846036).

Almost surely, 2^225170165 is an apocalyptic number.

It is an amenable number.

225170165 is a deficient number, since it is larger than the sum of its proper divisors (69598123).

225170165 is a wasteful number, since it uses less digits than its factorization.

225170165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4094019.

The product of its (nonzero) digits is 4200, while the sum is 29.

The square root of 225170165 is about 15005.6710946229. The cubic root of 225170165 is about 608.3734909793.

The spelling of 225170165 in words is "two hundred twenty-five million, one hundred seventy thousand, one hundred sixty-five".