166125166 has 32 divisors (see below), whose sum is σ = 265680000. Its totient is φ = 77774592.

The previous prime is 166125163. The next prime is 166125181. The reversal of 166125166 is 661521661.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166125163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 405970 + ... + 406378.

It is an arithmetic number, because the mean of its divisors is an integer number (8302500).

Almost surely, 2^166125166 is an apocalyptic number.

166125166 is a deficient number, since it is larger than the sum of its proper divisors (99554834).

166125166 is a wasteful number, since it uses less digits than its factorization.

166125166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636.

The product of its digits is 12960, while the sum is 34.

The square root of 166125166 is about 12888.9551942739. The cubic root of 166125166 is about 549.7245629120.

The spelling of 166125166 in words is "one hundred sixty-six million, one hundred twenty-five thousand, one hundred sixty-six".