166625072 has 20 divisors (see below), whose sum is σ = 327385296. Its totient is φ = 82138560.

The previous prime is 166625071. The next prime is 166625077. The reversal of 166625072 is 270526661.

It is not an unprimeable number, because it can be changed into a prime (166625071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72203 + ... + 74474.

Almost surely, 2^166625072 is an apocalyptic number.

It is an amenable number.

166625072 is a deficient number, since it is larger than the sum of its proper divisors (160760224).

166625072 is a wasteful number, since it uses less digits than its factorization.

166625072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146756 (or 146750 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 166625072 is about 12908.3334323219. Note that the first 3 decimals coincide. The cubic root of 166625072 is about 550.2754234857.

The spelling of 166625072 in words is "one hundred sixty-six million, six hundred twenty-five thousand, seventy-two".