129925952 has 56 divisors (see below), whose sum is σ = 292303200. Its totient is φ = 56802816.

The previous prime is 129925891. The next prime is 129925967. The reversal of 129925952 is 259529921.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 11699 + ... + 19917.

It is an arithmetic number, because the mean of its divisors is an integer number (5219700).

Almost surely, 2^129925952 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 129925952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (146151600).

129925952 is an abundant number, since it is smaller than the sum of its proper divisors (162377248).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

129925952 is a wasteful number, since it uses less digits than its factorization.

129925952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8263 (or 8253 counting only the distinct ones).

The product of its digits is 145800, while the sum is 44.

The square root of 129925952 is about 11398.5065688449. The cubic root of 129925952 is about 506.4835010430.

The spelling of 129925952 in words is "one hundred twenty-nine million, nine hundred twenty-five thousand, nine hundred fifty-two".