125796464657 has 2 divisors, whose sum is σ = 125796464658. Its totient is φ = 125796464656.

The previous prime is 125796464639. The next prime is 125796464693. The reversal of 125796464657 is 756464697521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 115086491536 + 10709973121 = 339244^2 + 103489^2 .

It is a cyclic number.

It is not a de Polignac number, because 125796464657 - 2¹² = 125796460561 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 125796464657.

It is not a weakly prime, because it can be changed into another prime (125796464617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62898232328 + 62898232329.

It is an arithmetic number, because the mean of its divisors is an integer number (62898232329).

Almost surely, 2^125796464657 is an apocalyptic number.

It is an amenable number.

125796464657 is a deficient number, since it is larger than the sum of its proper divisors (1).

125796464657 is an equidigital number, since it uses as much as digits as its factorization.

125796464657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 76204800, while the sum is 62.

The spelling of 125796464657 in words is "one hundred twenty-five billion, seven hundred ninety-six million, four hundred sixty-four thousand, six hundred fifty-seven".