129025004 has 12 divisors (see below), whose sum is σ = 229495728. Its totient is φ = 63454800.

The previous prime is 129025003. The next prime is 129025063. The reversal of 129025004 is 400520921.

It is not an unprimeable number, because it can be changed into a prime (129025003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 264152 + ... + 264639.

It is an arithmetic number, because the mean of its divisors is an integer number (19124644).

Almost surely, 2^129025004 is an apocalyptic number.

It is an amenable number.

129025004 is a deficient number, since it is larger than the sum of its proper divisors (100470724).

129025004 is a wasteful number, since it uses less digits than its factorization.

129025004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528856 (or 528854 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 129025004 is about 11358.9173779899. The cubic root of 129025004 is about 505.3100784955.

Adding to 129025004 its reverse (400520921), we get a palindrome (529545925).

The spelling of 129025004 in words is "one hundred twenty-nine million, twenty-five thousand, four".