625172651671 has 32 divisors (see below), whose sum is σ = 674685918720. Its totient is φ = 577172376576.

The previous prime is 625172651669. The next prime is 625172651693. The reversal of 625172651671 is 176156271526.

It is not a de Polignac number, because 625172651671 - 2¹ = 625172651669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (625172651071) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 189043600 + ... + 189046906.

It is an arithmetic number, because the mean of its divisors is an integer number (21083934960).

Almost surely, 2^625172651671 is an apocalyptic number.

625172651671 is a deficient number, since it is larger than the sum of its proper divisors (49513267049).

625172651671 is a wasteful number, since it uses less digits than its factorization.

625172651671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4183.

The product of its digits is 1058400, while the sum is 49.

The spelling of 625172651671 in words is "six hundred twenty-five billion, one hundred seventy-two million, six hundred fifty-one thousand, six hundred seventy-one".