165025165 has 16 divisors (see below), whose sum is σ = 210974400. Its totient is φ = 123558912.

The previous prime is 165025153. The next prime is 165025247. The reversal of 165025165 is 561520561.

165025165 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 165025165 - 2⁹ = 165024653 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2580 + ... + 18349.

It is an arithmetic number, because the mean of its divisors is an integer number (13185900).

Almost surely, 2^165025165 is an apocalyptic number.

It is an amenable number.

165025165 is a deficient number, since it is larger than the sum of its proper divisors (45949235).

165025165 is a wasteful number, since it uses less digits than its factorization.

165025165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21036.

The product of its (nonzero) digits is 9000, while the sum is 31.

The square root of 165025165 is about 12846.2120876156. The cubic root of 165025165 is about 548.5085376959.

The spelling of 165025165 in words is "one hundred sixty-five million, twenty-five thousand, one hundred sixty-five".