125929722368 has 30 divisors (see below), whose sum is σ = 251629532979. Its totient is φ = 62960846336.

The previous prime is 125929722367. The next prime is 125929722371. The reversal of 125929722368 is 863227929521.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 62964861184 + 62964861184 = 250928^2 + 250928^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=250928.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125929722361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 8021855 + ... + 8037537.

Almost surely, 2^125929722368 is an apocalyptic number.

It is an amenable number.

125929722368 is a deficient number, since it is larger than the sum of its proper divisors (125699810611).

125929722368 is an frugal number, since it uses more digits than its factorization.

125929722368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31384 (or 15685 counting only the distinct ones).

The product of its digits is 6531840, while the sum is 56.

The spelling of 125929722368 in words is "one hundred twenty-five billion, nine hundred twenty-nine million, seven hundred twenty-two thousand, three hundred sixty-eight".