166271125 has 16 divisors (see below), whose sum is σ = 208681200. Its totient is φ = 132264000.

The previous prime is 166271111. The next prime is 166271129. The reversal of 166271125 is 521172661.

It can be written as a sum of positive squares in 8 ways, for example, as 93663684 + 72607441 = 9678^2 + 8521^2 .

It is not a de Polignac number, because 166271125 - 2⁵ = 166271093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166271129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18951 + ... + 26299.

It is an arithmetic number, because the mean of its divisors is an integer number (13042575).

Almost surely, 2^166271125 is an apocalyptic number.

It is an amenable number.

166271125 is a deficient number, since it is larger than the sum of its proper divisors (42410075).

166271125 is an equidigital number, since it uses as much as digits as its factorization.

166271125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7545 (or 7535 counting only the distinct ones).

The product of its digits is 5040, while the sum is 31.

The square root of 166271125 is about 12894.6161245692. The cubic root of 166271125 is about 549.8855133605.

The spelling of 166271125 in words is "one hundred sixty-six million, two hundred seventy-one thousand, one hundred twenty-five".