8725907831 has 4 divisors (see below), whose sum is σ = 9105295152. Its totient is φ = 8346520512.

The previous prime is 8725907821. The next prime is 8725907857. The reversal of 8725907831 is 1387095278.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8725907831 is a prime.

It is a super-2 number, since 2×8725907831² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8725907831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8725907821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 189693626 + ... + 189693671.

It is an arithmetic number, because the mean of its divisors is an integer number (2276323788).

Almost surely, 2^8725907831 is an apocalyptic number.

8725907831 is a deficient number, since it is larger than the sum of its proper divisors (379387321).

8725907831 is a wasteful number, since it uses less digits than its factorization.

8725907831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379387320.

The product of its (nonzero) digits is 846720, while the sum is 50.

The square root of 8725907831 is about 93412.5678428765. The cubic root of 8725907831 is about 2058.7496599939.

The spelling of 8725907831 in words is "eight billion, seven hundred twenty-five million, nine hundred seven thousand, eight hundred thirty-one".