166684350925 has 12 divisors (see below), whose sum is σ = 217566942880. Its totient is φ = 126329191920.

The previous prime is 166684350913. The next prime is 166684350941. The reversal of 166684350925 is 529053486661.

It is not a de Polignac number, because 166684350925 - 2³¹ = 164536867277 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 175456737 + ... + 175457686.

Almost surely, 2^166684350925 is an apocalyptic number.

It is an amenable number.

166684350925 is a deficient number, since it is larger than the sum of its proper divisors (50882591955).

166684350925 is a wasteful number, since it uses less digits than its factorization.

166684350925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350914452 (or 350914447 counting only the distinct ones).

The product of its (nonzero) digits is 9331200, while the sum is 55.

The spelling of 166684350925 in words is "one hundred sixty-six billion, six hundred eighty-four million, three hundred fifty thousand, nine hundred twenty-five".