129587225 has 24 divisors (see below), whose sum is σ = 169810560. Its totient is φ = 97939520.

The previous prime is 129587203. The next prime is 129587231. The reversal of 129587225 is 522785921.

It is not a de Polignac number, because 129587225 - 2⁸ = 129586969 is a prime.

It is a hoax number, since the sum of its digits (41) 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, 32174 + ... + 35976.

It is an arithmetic number, because the mean of its divisors is an integer number (7075440).

Almost surely, 2^129587225 is an apocalyptic number.

It is an amenable number.

129587225 is a deficient number, since it is larger than the sum of its proper divisors (40223335).

129587225 is a wasteful number, since it uses less digits than its factorization.

129587225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3889 (or 3884 counting only the distinct ones).

The product of its digits is 100800, while the sum is 41.

The square root of 129587225 is about 11383.6384780965. The cubic root of 129587225 is about 506.0429707762.

The spelling of 129587225 in words is "one hundred twenty-nine million, five hundred eighty-seven thousand, two hundred twenty-five".