125679556859 has 2 divisors, whose sum is σ = 125679556860. Its totient is φ = 125679556858.

The previous prime is 125679556837. The next prime is 125679556883. The reversal of 125679556859 is 958655976521.

It is a weak prime.

It is an emirp because it is prime and its reverse (958655976521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 125679556859 - 2³⁶ = 56960080123 is a prime.

It is a super-3 number, since 3×125679556859³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (125679556759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62839778429 + 62839778430.

It is an arithmetic number, because the mean of its divisors is an integer number (62839778430).

Almost surely, 2^125679556859 is an apocalyptic number.

125679556859 is a deficient number, since it is larger than the sum of its proper divisors (1).

125679556859 is an equidigital number, since it uses as much as digits as its factorization.

125679556859 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 204120000, while the sum is 68.

The spelling of 125679556859 in words is "one hundred twenty-five billion, six hundred seventy-nine million, five hundred fifty-six thousand, eight hundred fifty-nine".