125668809579 has 8 divisors (see below), whose sum is σ = 167730979392. Its totient is φ = 83692923080.

The previous prime is 125668809551. The next prime is 125668809611. The reversal of 125668809579 is 975908866521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 125668809579 - 2⁵ = 125668809547 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125668804579) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21567429 + ... + 21573254.

It is an arithmetic number, because the mean of its divisors is an integer number (20966372424).

Almost surely, 2^125668809579 is an apocalyptic number.

125668809579 is a deficient number, since it is larger than the sum of its proper divisors (42062169813).

125668809579 is an equidigital number, since it uses as much as digits as its factorization.

125668809579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43141657.

The product of its (nonzero) digits is 65318400, while the sum is 66.

The spelling of 125668809579 in words is "one hundred twenty-five billion, six hundred sixty-eight million, eight hundred nine thousand, five hundred seventy-nine".