625361536817 has 2 divisors, whose sum is σ = 625361536818. Its totient is φ = 625361536816.

The previous prime is 625361536753. The next prime is 625361536823. The reversal of 625361536817 is 718635163526.

625361536817 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 314417011441 + 310944525376 = 560729^2 + 557624^2 .

It is a cyclic number.

It is not a de Polignac number, because 625361536817 - 2⁶ = 625361536753 is a prime.

It is not a weakly prime, because it can be changed into another prime (625361536517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312680768408 + 312680768409.

It is an arithmetic number, because the mean of its divisors is an integer number (312680768409).

Almost surely, 2^625361536817 is an apocalyptic number.

It is an amenable number.

625361536817 is a deficient number, since it is larger than the sum of its proper divisors (1).

625361536817 is an equidigital number, since it uses as much as digits as its factorization.

625361536817 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5443200, while the sum is 53.

The spelling of 625361536817 in words is "six hundred twenty-five billion, three hundred sixty-one million, five hundred thirty-six thousand, eight hundred seventeen".