165156325 has 12 divisors (see below), whose sum is σ = 206271520. Its totient is φ = 131171760.

The previous prime is 165156317. The next prime is 165156331. The reversal of 165156325 is 523651561.

165156325 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 165156325 - 2³ = 165156317 is a prime.

It is a super-2 number, since 2×165156325² = 54553223375011250, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20289 + ... + 27238.

Almost surely, 2^165156325 is an apocalyptic number.

It is an amenable number.

165156325 is a deficient number, since it is larger than the sum of its proper divisors (41115195).

165156325 is a wasteful number, since it uses less digits than its factorization.

165156325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47676 (or 47671 counting only the distinct ones).

The product of its digits is 27000, while the sum is 34.

The square root of 165156325 is about 12851.3160804643. The cubic root of 165156325 is about 548.6538151926.

The spelling of 165156325 in words is "one hundred sixty-five million, one hundred fifty-six thousand, three hundred twenty-five".