125636327513 has 2 divisors, whose sum is σ = 125636327514. Its totient is φ = 125636327512.

The previous prime is 125636327477. The next prime is 125636327561. The reversal of 125636327513 is 315723636521.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 95364851344 + 30271476169 = 308812^2 + 173987^2 .

It is a cyclic number.

It is not a de Polignac number, because 125636327513 - 2⁶ = 125636327449 is a prime.

It is not a weakly prime, because it can be changed into another prime (125636327813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62818163756 + 62818163757.

It is an arithmetic number, because the mean of its divisors is an integer number (62818163757).

Almost surely, 2^125636327513 is an apocalyptic number.

It is an amenable number.

125636327513 is a deficient number, since it is larger than the sum of its proper divisors (1).

125636327513 is an equidigital number, since it uses as much as digits as its factorization.

125636327513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 680400, while the sum is 44.

The spelling of 125636327513 in words is "one hundred twenty-five billion, six hundred thirty-six million, three hundred twenty-seven thousand, five hundred thirteen".