125679556837 has 2 divisors, whose sum is σ = 125679556838. Its totient is φ = 125679556836.

The previous prime is 125679556777. The next prime is 125679556859. The reversal of 125679556837 is 738655976521.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99180275041 + 26499281796 = 314929^2 + 162786^2 .

It is an emirp because it is prime and its reverse (738655976521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 125679556837 - 2¹¹ = 125679554789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125679556237) 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, 62839778418 + 62839778419.

It is an arithmetic number, because the mean of its divisors is an integer number (62839778419).

Almost surely, 2^125679556837 is an apocalyptic number.

It is an amenable number.

125679556837 is a deficient number, since it is larger than the sum of its proper divisors (1).

125679556837 is an equidigital number, since it uses as much as digits as its factorization.

125679556837 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 95256000, while the sum is 64.

The spelling of 125679556837 in words is "one hundred twenty-five billion, six hundred seventy-nine million, five hundred fifty-six thousand, eight hundred thirty-seven".