125971722529 has 8 divisors (see below), whose sum is σ = 131341685760. Its totient is φ = 120670166736.

The previous prime is 125971722511. The next prime is 125971722577. The reversal of 125971722529 is 925227179521.

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 125971722529 - 2⁵ = 125971722497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125971722589) 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, 17098099 + ... + 17105464.

It is an arithmetic number, because the mean of its divisors is an integer number (16417710720).

Almost surely, 2^125971722529 is an apocalyptic number.

It is an amenable number.

125971722529 is a deficient number, since it is larger than the sum of its proper divisors (5369963231).

125971722529 is a wasteful number, since it uses less digits than its factorization.

125971722529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34203719.

The product of its digits is 1587600, while the sum is 52.

The spelling of 125971722529 in words is "one hundred twenty-five billion, nine hundred seventy-one million, seven hundred twenty-two thousand, five hundred twenty-nine".