625056365657 has 2 divisors, whose sum is σ = 625056365658. Its totient is φ = 625056365656.

The previous prime is 625056365597. The next prime is 625056365743. The reversal of 625056365657 is 756563650526.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 546617720896 + 78438644761 = 739336^2 + 280069^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-625056365657 is a prime.

It is not a weakly prime, because it can be changed into another prime (625056065657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312528182828 + 312528182829.

It is an arithmetic number, because the mean of its divisors is an integer number (312528182829).

Almost surely, 2^625056365657 is an apocalyptic number.

It is an amenable number.

625056365657 is a deficient number, since it is larger than the sum of its proper divisors (1).

625056365657 is an equidigital number, since it uses as much as digits as its factorization.

625056365657 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34020000, while the sum is 56.

The spelling of 625056365657 in words is "six hundred twenty-five billion, fifty-six million, three hundred sixty-five thousand, six hundred fifty-seven".