165974325 has 48 divisors (see below), whose sum is σ = 312408576. Its totient is φ = 76964800.

The previous prime is 165974311. The next prime is 165974377. The reversal of 165974325 is 523479561.

It is not a de Polignac number, because 165974325 - 2⁴ = 165974309 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14602 + ... + 23348.

It is an arithmetic number, because the mean of its divisors is an integer number (6508512).

Almost surely, 2^165974325 is an apocalyptic number.

165974325 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

165974325 is a deficient number, since it is larger than the sum of its proper divisors (146434251).

165974325 is a wasteful number, since it uses less digits than its factorization.

165974325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8794 (or 8789 counting only the distinct ones).

The product of its digits is 226800, while the sum is 42.

The square root of 165974325 is about 12883.1023049575. The cubic root of 165974325 is about 549.5581299451.

The spelling of 165974325 in words is "one hundred sixty-five million, nine hundred seventy-four thousand, three hundred twenty-five".