625870866432089 has 2 divisors, whose sum is σ = 625870866432090. Its totient is φ = 625870866432088.

The previous prime is 625870866432037. The next prime is 625870866432193. The reversal of 625870866432089 is 980234668078526.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 556447525939600 + 69423340492489 = 23589140^2 + 8332067^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-625870866432089 is a prime.

It is not a weakly prime, because it can be changed into another prime (625870866432689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312935433216044 + 312935433216045.

It is an arithmetic number, because the mean of its divisors is an integer number (312935433216045).

Almost surely, 2^{625870866432089} is an apocalyptic number.

It is an amenable number.

625870866432089 is a deficient number, since it is larger than the sum of its proper divisors (1).

625870866432089 is an equidigital number, since it uses as much as digits as its factorization.

625870866432089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1672151040, while the sum is 74.

The spelling of 625870866432089 in words is "six hundred twenty-five trillion, eight hundred seventy billion, eight hundred sixty-six million, four hundred thirty-two thousand, eighty-nine".