65125913257 has 2 divisors, whose sum is σ = 65125913258. Its totient is φ = 65125913256.

The previous prime is 65125913219. The next prime is 65125913353. The reversal of 65125913257 is 75231952156.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62918698896 + 2207214361 = 250836^2 + 46981^2 .

It is a cyclic number.

It is not a de Polignac number, because 65125913257 - 2⁷ = 65125913129 is a prime.

It is not a weakly prime, because it can be changed into another prime (65135913257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32562956628 + 32562956629.

It is an arithmetic number, because the mean of its divisors is an integer number (32562956629).

Almost surely, 2^65125913257 is an apocalyptic number.

It is an amenable number.

65125913257 is a deficient number, since it is larger than the sum of its proper divisors (1).

65125913257 is an equidigital number, since it uses as much as digits as its factorization.

65125913257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 567000, while the sum is 46.

The spelling of 65125913257 in words is "sixty-five billion, one hundred twenty-five million, nine hundred thirteen thousand, two hundred fifty-seven".