129725204 has 48 divisors (see below), whose sum is σ = 270606336. Its totient is φ = 53244000.

The previous prime is 129725203. The next prime is 129725213. The reversal of 129725204 is 402527921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129725203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88679 + ... + 90129.

It is an arithmetic number, because the mean of its divisors is an integer number (5637632).

Almost surely, 2^129725204 is an apocalyptic number.

129725204 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 129725204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135303168).

129725204 is an abundant number, since it is smaller than the sum of its proper divisors (140881132).

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

129725204 is a wasteful number, since it uses less digits than its factorization.

129725204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1596 (or 1594 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 129725204 is about 11389.6972742914. The cubic root of 129725204 is about 506.2225114577. Note that the first 3 decimals are identical.

The spelling of 129725204 in words is "one hundred twenty-nine million, seven hundred twenty-five thousand, two hundred four".