671172670725 has 24 divisors (see below), whose sum is σ = 1114517907360. Its totient is φ = 356395609920.

The previous prime is 671172670717. The next prime is 671172670793. The reversal of 671172670725 is 527076271176.

It is not a de Polignac number, because 671172670725 - 2³ = 671172670717 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19522059 + ... + 19556408.

It is an arithmetic number, because the mean of its divisors is an integer number (46438246140).

Almost surely, 2^671172670725 is an apocalyptic number.

It is an amenable number.

671172670725 is a deficient number, since it is larger than the sum of its proper divisors (443345236635).

671172670725 is a wasteful number, since it uses less digits than its factorization.

671172670725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39078709 (or 39078704 counting only the distinct ones).

The product of its (nonzero) digits is 1728720, while the sum is 51.

The spelling of 671172670725 in words is "six hundred seventy-one billion, one hundred seventy-two million, six hundred seventy thousand, seven hundred twenty-five".