129398325 has 24 divisors (see below), whose sum is σ = 244502208. Its totient is φ = 59153280.

The previous prime is 129398317. The next prime is 129398327. The reversal of 129398325 is 523893921.

It is not a de Polignac number, because 129398325 - 2³ = 129398317 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129398327) 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 23 ways as a sum of consecutive naturals, for example, 122712 + ... + 123761.

It is an arithmetic number, because the mean of its divisors is an integer number (10187592).

Almost surely, 2^129398325 is an apocalyptic number.

129398325 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

129398325 is a deficient number, since it is larger than the sum of its proper divisors (115103883).

129398325 is a wasteful number, since it uses less digits than its factorization.

129398325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246493 (or 246488 counting only the distinct ones).

The product of its digits is 116640, while the sum is 42.

The square root of 129398325 is about 11375.3384565032. The cubic root of 129398325 is about 505.7969640089.

The spelling of 129398325 in words is "one hundred twenty-nine million, three hundred ninety-eight thousand, three hundred twenty-five".