166725625 has 20 divisors (see below), whose sum is σ = 227289744. Its totient is φ = 121250000.

The previous prime is 166725623. The next prime is 166725641. The reversal of 166725625 is 526527661.

It is not a de Polignac number, because 166725625 - 2¹ = 166725623 is a prime.

It is not an unprimeable number, because it can be changed into a prime (166725623) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5251 + ... + 19000.

Almost surely, 2^166725625 is an apocalyptic number.

It is an amenable number.

166725625 is a deficient number, since it is larger than the sum of its proper divisors (60564119).

166725625 is an equidigital number, since it uses as much as digits as its factorization.

166725625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24282 (or 24267 counting only the distinct ones).

The product of its digits is 151200, while the sum is 40.

The square root of 166725625 is about 12912.2277318827. The cubic root of 166725625 is about 550.3860925412.

The spelling of 166725625 in words is "one hundred sixty-six million, seven hundred twenty-five thousand, six hundred twenty-five".