672149691625 has 32 divisors (see below), whose sum is σ = 844468934400. Its totient is φ = 534124412800.

The previous prime is 672149691613. The next prime is 672149691641. The reversal of 672149691625 is 526196941276.

It is not a de Polignac number, because 672149691625 - 2²⁵ = 672116137193 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 672149691625.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12175836 + ... + 12230914.

It is an arithmetic number, because the mean of its divisors is an integer number (26389654200).

Almost surely, 2^672149691625 is an apocalyptic number.

It is an amenable number.

672149691625 is a deficient number, since it is larger than the sum of its proper divisors (172319242775).

672149691625 is a wasteful number, since it uses less digits than its factorization.

672149691625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55746 (or 55736 counting only the distinct ones).

The product of its digits is 9797760, while the sum is 58.

The spelling of 672149691625 in words is "six hundred seventy-two billion, one hundred forty-nine million, six hundred ninety-one thousand, six hundred twenty-five".