129300825 has 36 divisors (see below), whose sum is σ = 223544720. Its totient is φ = 65941920.

The previous prime is 129300817. The next prime is 129300841. The reversal of 129300825 is 528003921.

It is a happy number.

It is not a de Polignac number, because 129300825 - 2³ = 129300817 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 129300792 and 129300801.

It is an unprimeable number.

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 35 ways as a sum of consecutive naturals, for example, 38046 + ... + 41304.

Almost surely, 2^129300825 is an apocalyptic number.

129300825 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

129300825 is a deficient number, since it is larger than the sum of its proper divisors (94243895).

129300825 is a wasteful number, since it uses less digits than its factorization.

129300825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3318 (or 3290 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 129300825 is about 11371.0520621445. The cubic root of 129300825 is about 505.6698948851.

The spelling of 129300825 in words is "one hundred twenty-nine million, three hundred thousand, eight hundred twenty-five".