165422625 has 16 divisors (see below), whose sum is σ = 275263872. Its totient is φ = 88225200.

The previous prime is 165422623. The next prime is 165422629. The reversal of 165422625 is 526224561.

It is not a de Polignac number, because 165422625 - 2¹ = 165422623 is a prime.

It is not an unprimeable number, because it can be changed into a prime (165422623) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 220189 + ... + 220938.

It is an arithmetic number, because the mean of its divisors is an integer number (17203992).

Almost surely, 2^165422625 is an apocalyptic number.

165422625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

165422625 is a deficient number, since it is larger than the sum of its proper divisors (109841247).

165422625 is an equidigital number, since it uses as much as digits as its factorization.

165422625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441145 (or 441135 counting only the distinct ones).

The product of its digits is 28800, while the sum is 33.

The square root of 165422625 is about 12861.6727139202. The cubic root of 165422625 is about 548.9485421294.

The spelling of 165422625 in words is "one hundred sixty-five million, four hundred twenty-two thousand, six hundred twenty-five".