129595425 has 12 divisors (see below), whose sum is σ = 214264560. Its totient is φ = 69117520.

The previous prime is 129595397. The next prime is 129595429. The reversal of 129595425 is 524595921.

It is a happy number.

It is not a de Polignac number, because 129595425 - 2⁵ = 129595393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (129595429) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 863895 + ... + 864044.

It is an arithmetic number, because the mean of its divisors is an integer number (17855380).

Almost surely, 2^129595425 is an apocalyptic number.

129595425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

129595425 is a deficient number, since it is larger than the sum of its proper divisors (84669135).

129595425 is a wasteful number, since it uses less digits than its factorization.

129595425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1727952 (or 1727947 counting only the distinct ones).

The product of its digits is 162000, while the sum is 42.

The square root of 129595425 is about 11383.9986384398. The cubic root of 129595425 is about 506.0536443202.

The spelling of 129595425 in words is "one hundred twenty-nine million, five hundred ninety-five thousand, four hundred twenty-five".