166333825 has 12 divisors (see below), whose sum is σ = 235719040. Its totient is φ = 114057360.

The previous prime is 166333819. The next prime is 166333829. The reversal of 166333825 is 528333661.

It is a happy number.

It is not a de Polignac number, because 166333825 - 2⁵ = 166333793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (166333829) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 475065 + ... + 475414.

Almost surely, 2^166333825 is an apocalyptic number.

It is an amenable number.

166333825 is a deficient number, since it is larger than the sum of its proper divisors (69385215).

166333825 is an equidigital number, since it uses as much as digits as its factorization.

166333825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 950496 (or 950491 counting only the distinct ones).

The product of its digits is 77760, while the sum is 37.

The square root of 166333825 is about 12897.0471426602. The cubic root of 166333825 is about 549.9546243557.

The spelling of 166333825 in words is "one hundred sixty-six million, three hundred thirty-three thousand, eight hundred twenty-five".