731489931625 has 8 divisors (see below), whose sum is σ = 912899434824. Its totient is φ = 585191945200.

The previous prime is 731489931593. The next prime is 731489931629. The reversal of 731489931625 is 526139984137.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 211191717136 + 520298214489 = 459556^2 + 721317^2 .

It is not a de Polignac number, because 731489931625 - 2⁵ = 731489931593 is a prime.

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 731489931625.

It is not an unprimeable number, because it can be changed into a prime (731489931629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2925959602 + ... + 2925959851.

It is an arithmetic number, because the mean of its divisors is an integer number (114112429353).

Almost surely, 2^731489931625 is an apocalyptic number.

It is an amenable number.

731489931625 is a deficient number, since it is larger than the sum of its proper divisors (181409503199).

731489931625 is an equidigital number, since it uses as much as digits as its factorization.

731489931625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5851919468 (or 5851919458 counting only the distinct ones).

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

The spelling of 731489931625 in words is "seven hundred thirty-one billion, four hundred eighty-nine million, nine hundred thirty-one thousand, six hundred twenty-five".