166623323625325 has 24 divisors (see below), whose sum is σ = 237327677592192. Its totient is φ = 113676013657920.

The previous prime is 166623323625313. The next prime is 166623323625329. The reversal of 166623323625325 is 523526323326661.

It is not a de Polignac number, because 166623323625325 - 2³³ = 166614733690733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166623323625329) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2416547449 + ... + 2416616398.

It is an arithmetic number, because the mean of its divisors is an integer number (9888653233008).

Almost surely, 2^{166623323625325} is an apocalyptic number.

It is an amenable number.

166623323625325 is a deficient number, since it is larger than the sum of its proper divisors (70704353966867).

166623323625325 is a wasteful number, since it uses less digits than its factorization.

166623323625325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4833164061 (or 4833164056 counting only the distinct ones).

The product of its digits is 41990400, while the sum is 55.

The spelling of 166623323625325 in words is "one hundred sixty-six trillion, six hundred twenty-three billion, three hundred twenty-three million, six hundred twenty-five thousand, three hundred twenty-five".