129968237825 has 12 divisors (see below), whose sum is σ = 161323269888. Its totient is φ = 103869651600.

The previous prime is 129968237801. The next prime is 129968237869. The reversal of 129968237825 is 528732869921.

It is not a de Polignac number, because 129968237825 - 2⁸ = 129968237569 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2598197 + ... + 2647746.

It is an arithmetic number, because the mean of its divisors is an integer number (13443605824).

Almost surely, 2^129968237825 is an apocalyptic number.

It is an amenable number.

129968237825 is a deficient number, since it is larger than the sum of its proper divisors (31355032063).

129968237825 is an equidigital number, since it uses as much as digits as its factorization.

129968237825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5246944 (or 5246939 counting only the distinct ones).

The product of its digits is 26127360, while the sum is 62.

The spelling of 129968237825 in words is "one hundred twenty-nine billion, nine hundred sixty-eight million, two hundred thirty-seven thousand, eight hundred twenty-five".