125687255329 has 2 divisors, whose sum is σ = 125687255330. Its totient is φ = 125687255328.

The previous prime is 125687255311. The next prime is 125687255359. The reversal of 125687255329 is 923552786521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 103082734225 + 22604521104 = 321065^2 + 150348^2 .

It is an emirp because it is prime and its reverse (923552786521) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125687255329 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 125687255329.

It is not a weakly prime, because it can be changed into another prime (125687255359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62843627664 + 62843627665.

It is an arithmetic number, because the mean of its divisors is an integer number (62843627665).

Almost surely, 2^125687255329 is an apocalyptic number.

It is an amenable number.

125687255329 is a deficient number, since it is larger than the sum of its proper divisors (1).

125687255329 is an equidigital number, since it uses as much as digits as its factorization.

125687255329 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9072000, while the sum is 55.

The spelling of 125687255329 in words is "one hundred twenty-five billion, six hundred eighty-seven million, two hundred fifty-five thousand, three hundred twenty-nine".