129306625 has 16 divisors (see below), whose sum is σ = 184429440. Its totient is φ = 88666800.

The previous prime is 129306599. The next prime is 129306629. The reversal of 129306625 is 526603921.

It is not a de Polignac number, because 129306625 - 2¹⁹ = 128782337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (129306629) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73015 + ... + 74764.

It is an arithmetic number, because the mean of its divisors is an integer number (11526840).

Almost surely, 2^129306625 is an apocalyptic number.

It is an amenable number.

129306625 is a deficient number, since it is larger than the sum of its proper divisors (55122815).

129306625 is an equidigital number, since it uses as much as digits as its factorization.

129306625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147801 (or 147791 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 129306625 is about 11371.3070928544. The cubic root of 129306625 is about 505.6774556555.

The spelling of 129306625 in words is "one hundred twenty-nine million, three hundred six thousand, six hundred twenty-five".