166666675925 has 12 divisors (see below), whose sum is σ = 206688439620. Its totient is φ = 133319301120.

The previous prime is 166666675913. The next prime is 166666675927. The reversal of 166666675925 is 529576666661.

It can be written as a sum of positive squares in 6 ways, for example, as 13160219524 + 153506456401 = 114718^2 + 391799^2 .

It is a de Polignac number, because none of the positive numbers 2^k-166666675925 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166666675927) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 105452 + ... + 586901.

It is an arithmetic number, because the mean of its divisors is an integer number (17224036635).

Almost surely, 2^166666675925 is an apocalyptic number.

It is an amenable number.

166666675925 is a deficient number, since it is larger than the sum of its proper divisors (40021763695).

166666675925 is an equidigital number, since it uses as much as digits as its factorization.

166666675925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 701992 (or 701987 counting only the distinct ones).

The product of its digits is 146966400, while the sum is 65.

The spelling of 166666675925 in words is "one hundred sixty-six billion, six hundred sixty-six million, six hundred seventy-five thousand, nine hundred twenty-five".