166125154 has 16 divisors (see below), whose sum is σ = 270071928. Its totient is φ = 76182912.

The previous prime is 166125131. The next prime is 166125163. The reversal of 166125154 is 451521661.

It can be written as a sum of positive squares in 4 ways, for example, as 42315025 + 123810129 = 6505^2 + 11127^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16267 + ... + 24430.

Almost surely, 2^166125154 is an apocalyptic number.

166125154 is a deficient number, since it is larger than the sum of its proper divisors (103946774).

166125154 is a wasteful number, since it uses less digits than its factorization.

166125154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40869.

The product of its digits is 7200, while the sum is 31.

The square root of 166125154 is about 12888.9547287590. The cubic root of 166125154 is about 549.7245496756.

The spelling of 166125154 in words is "one hundred sixty-six million, one hundred twenty-five thousand, one hundred fifty-four".