125655712979 has 2 divisors, whose sum is σ = 125655712980. Its totient is φ = 125655712978.

The previous prime is 125655712961. The next prime is 125655713011. The reversal of 125655712979 is 979217556521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 125655712979 - 2³⁶ = 56936236243 is a prime.

It is not a weakly prime, because it can be changed into another prime (125655712909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62827856489 + 62827856490.

It is an arithmetic number, because the mean of its divisors is an integer number (62827856490).

Almost surely, 2^125655712979 is an apocalyptic number.

125655712979 is a deficient number, since it is larger than the sum of its proper divisors (1).

125655712979 is an equidigital number, since it uses as much as digits as its factorization.

125655712979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11907000, while the sum is 59.

The spelling of 125655712979 in words is "one hundred twenty-five billion, six hundred fifty-five million, seven hundred twelve thousand, nine hundred seventy-nine".