165266325 has 120 divisors (see below), whose sum is σ = 356495040. Its totient is φ = 74131200.

The previous prime is 165266317. The next prime is 165266327. The reversal of 165266325 is 523662561.

It is a happy number.

165266325 is a `hidden beast` number, since 16 + 5 + 2 + 6 + 632 + 5 = 666.

It is not a de Polignac number, because 165266325 - 2³ = 165266317 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 165266325.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165266327) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 1261510 + ... + 1261640.

It is an arithmetic number, because the mean of its divisors is an integer number (2970792).

Almost surely, 2^165266325 is an apocalyptic number.

165266325 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

165266325 is an abundant number, since it is smaller than the sum of its proper divisors (191228715).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165266325 is a wasteful number, since it uses less digits than its factorization.

165266325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249 (or 235 counting only the distinct ones).

The product of its digits is 64800, while the sum is 36.

The square root of 165266325 is about 12855.5950854093. The cubic root of 165266325 is about 548.7755958263.

The spelling of 165266325 in words is "one hundred sixty-five million, two hundred sixty-six thousand, three hundred twenty-five".