166944725 has 6 divisors (see below), whose sum is σ = 207011490. Its totient is φ = 133555760.

The previous prime is 166944719. The next prime is 166944737. The reversal of 166944725 is 527449661.

It can be written as a sum of positive squares in 3 ways, for example, as 2515396 + 164429329 = 1586^2 + 12823^2 .

It is not a de Polignac number, because 166944725 - 2¹⁰ = 166943701 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3338870 + ... + 3338919.

It is an arithmetic number, because the mean of its divisors is an integer number (34501915).

Almost surely, 2^166944725 is an apocalyptic number.

It is an amenable number.

166944725 is a deficient number, since it is larger than the sum of its proper divisors (40066765).

166944725 is an equidigital number, since it uses as much as digits as its factorization.

166944725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6677799 (or 6677794 counting only the distinct ones).

The product of its digits is 362880, while the sum is 44.

The square root of 166944725 is about 12920.7091523647. The cubic root of 166944725 is about 550.6270809070.

The spelling of 166944725 in words is "one hundred sixty-six million, nine hundred forty-four thousand, seven hundred twenty-five".