625878612834831 has 10 divisors (see below), whose sum is σ = 934954471024992. Its totient is φ = 417252408556500.

The previous prime is 625878612834803. The next prime is 625878612834833. The reversal of 625878612834831 is 138438216878526.

It is a happy number.

625878612834831 is a `hidden beast` number, since 6 + 2 + 5 + 8 + 7 + 8 + 61 + 2 + 83 + 483 + 1 = 666.

It is not a de Polignac number, because 625878612834831 - 2⁷ = 625878612834703 is a prime.

It is a super-2 number, since 2×625878612834831² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 625878612834831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (625878612834833) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 3863448227295 + ... + 3863448227456.

Almost surely, 2^{625878612834831} is an apocalyptic number.

625878612834831 is a deficient number, since it is larger than the sum of its proper divisors (309075858190161).

625878612834831 is an equidigital number, since it uses as much as digits as its factorization.

625878612834831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7726896454763 (or 7726896454754 counting only the distinct ones).

The product of its digits is 743178240, while the sum is 72.

The spelling of 625878612834831 in words is "six hundred twenty-five trillion, eight hundred seventy-eight billion, six hundred twelve million, eight hundred thirty-four thousand, eight hundred thirty-one".