129862025 has 24 divisors (see below), whose sum is σ = 168739200. Its totient is φ = 98954240.

The previous prime is 129861989. The next prime is 129862037. The reversal of 129862025 is 520268921.

It is a happy number.

It is not a de Polignac number, because 129862025 - 2¹⁰ = 129861001 is a prime.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 257924 + ... + 258426.

It is an arithmetic number, because the mean of its divisors is an integer number (7030800).

Almost surely, 2^129862025 is an apocalyptic number.

It is an amenable number.

129862025 is a deficient number, since it is larger than the sum of its proper divisors (38877175).

129862025 is a wasteful number, since it uses less digits than its factorization.

129862025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 985 (or 980 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 129862025 is about 11395.7020406818. The cubic root of 129862025 is about 506.4004196622.

The spelling of 129862025 in words is "one hundred twenty-nine million, eight hundred sixty-two thousand, twenty-five".