166725275 has 12 divisors (see below), whose sum is σ = 215728752. Its totient is φ = 127580640.

The previous prime is 166725271. The next prime is 166725277. The reversal of 166725275 is 572527661.

It is not a de Polignac number, because 166725275 - 2² = 166725271 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166725271) 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 11 ways as a sum of consecutive naturals, for example, 144404 + ... + 145553.

It is an arithmetic number, because the mean of its divisors is an integer number (17977396).

Almost surely, 2^166725275 is an apocalyptic number.

166725275 is a deficient number, since it is larger than the sum of its proper divisors (49003477).

166725275 is a wasteful number, since it uses less digits than its factorization.

166725275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289990 (or 289985 counting only the distinct ones).

The product of its digits is 176400, while the sum is 41.

The square root of 166725275 is about 12912.2141788308. The cubic root of 166725275 is about 550.3857074069.

The spelling of 166725275 in words is "one hundred sixty-six million, seven hundred twenty-five thousand, two hundred seventy-five".