129235625 has 20 divisors (see below), whose sum is σ = 170008080. Its totient is φ = 97938000.

The previous prime is 129235591. The next prime is 129235627. The reversal of 129235625 is 526532921.

It is not a de Polignac number, because 129235625 - 2¹⁴ = 129219241 is a prime.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (129235627) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 6434 + ... + 17316.

It is an arithmetic number, because the mean of its divisors is an integer number (8500404).

Almost surely, 2^129235625 is an apocalyptic number.

It is an amenable number.

129235625 is a deficient number, since it is larger than the sum of its proper divisors (40772455).

129235625 is an equidigital number, since it uses as much as digits as its factorization.

129235625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10922 (or 10907 counting only the distinct ones).

The product of its digits is 32400, while the sum is 35.

The square root of 129235625 is about 11368.1847715455. The cubic root of 129235625 is about 505.5848858365.

The spelling of 129235625 in words is "one hundred twenty-nine million, two hundred thirty-five thousand, six hundred twenty-five".