125956835651 has 2 divisors, whose sum is σ = 125956835652. Its totient is φ = 125956835650.

The previous prime is 125956835647. The next prime is 125956835681. The reversal of 125956835651 is 156538659521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 125956835651 - 2² = 125956835647 is a prime.

It is not a weakly prime, because it can be changed into another prime (125956835681) 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, 62978417825 + 62978417826.

It is an arithmetic number, because the mean of its divisors is an integer number (62978417826).

Almost surely, 2^125956835651 is an apocalyptic number.

125956835651 is a deficient number, since it is larger than the sum of its proper divisors (1).

125956835651 is an equidigital number, since it uses as much as digits as its factorization.

125956835651 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9720000, while the sum is 56.

The spelling of 125956835651 in words is "one hundred twenty-five billion, nine hundred fifty-six million, eight hundred thirty-five thousand, six hundred fifty-one".