129025825 has 12 divisors (see below), whose sum is σ = 160211968. Its totient is φ = 103078800.

The previous prime is 129025781. The next prime is 129025859. The reversal of 129025825 is 528520921.

It is a happy number.

It is not a de Polignac number, because 129025825 - 2¹³ = 129017633 is a prime.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17440 + ... + 23710.

Almost surely, 2^129025825 is an apocalyptic number.

It is an amenable number.

129025825 is a deficient number, since it is larger than the sum of its proper divisors (31186143).

129025825 is an equidigital number, since it uses as much as digits as its factorization.

129025825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7104 (or 7099 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 34.

The square root of 129025825 is about 11358.9535169398. The cubic root of 129025825 is about 505.3111502741.

The spelling of 129025825 in words is "one hundred twenty-nine million, twenty-five thousand, eight hundred twenty-five".