625392908641 has 2 divisors, whose sum is σ = 625392908642. Its totient is φ = 625392908640.

The previous prime is 625392908627. The next prime is 625392908683. The reversal of 625392908641 is 146809293526.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 409850918416 + 215541990225 = 640196^2 + 464265^2 .

It is a cyclic number.

It is not a de Polignac number, because 625392908641 - 2¹⁵ = 625392875873 is a prime.

It is a super-2 number, since 2×625392908641² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (625392908611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312696454320 + 312696454321.

It is an arithmetic number, because the mean of its divisors is an integer number (312696454321).

Almost surely, 2^625392908641 is an apocalyptic number.

It is an amenable number.

625392908641 is a deficient number, since it is larger than the sum of its proper divisors (1).

625392908641 is an equidigital number, since it uses as much as digits as its factorization.

625392908641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5598720, while the sum is 55.

The spelling of 625392908641 in words is "six hundred twenty-five billion, three hundred ninety-two million, nine hundred eight thousand, six hundred forty-one".