125868138859 has 2 divisors, whose sum is σ = 125868138860. Its totient is φ = 125868138858.

The previous prime is 125868138769. The next prime is 125868138889. The reversal of 125868138859 is 958831868521.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 125868138859 - 2¹¹ = 125868136811 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 125868138859.

It is not a weakly prime, because it can be changed into another prime (125868138889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62934069429 + 62934069430.

It is an arithmetic number, because the mean of its divisors is an integer number (62934069430).

Almost surely, 2^125868138859 is an apocalyptic number.

125868138859 is a deficient number, since it is larger than the sum of its proper divisors (1).

125868138859 is an equidigital number, since it uses as much as digits as its factorization.

125868138859 is an evil number, because the sum of its binary digits is even.

The product of its digits is 33177600, while the sum is 64.

The spelling of 125868138859 in words is "one hundred twenty-five billion, eight hundred sixty-eight million, one hundred thirty-eight thousand, eight hundred fifty-nine".