129488725 has 12 divisors (see below), whose sum is σ = 162069984. Its totient is φ = 102620720.

The previous prime is 129488719. The next prime is 129488729. The reversal of 129488725 is 527884921.

It is not a de Polignac number, because 129488725 - 2⁵ = 129488693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129488729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21529 + ... + 26878.

It is an arithmetic number, because the mean of its divisors is an integer number (13505832).

Almost surely, 2^129488725 is an apocalyptic number.

It is an amenable number.

129488725 is a deficient number, since it is larger than the sum of its proper divisors (32581259).

129488725 is a wasteful number, since it uses less digits than its factorization.

129488725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48524 (or 48519 counting only the distinct ones).

The product of its digits is 322560, while the sum is 46.

The square root of 129488725 is about 11379.3112708986. The cubic root of 129488725 is about 505.9147228794.

The spelling of 129488725 in words is "one hundred twenty-nine million, four hundred eighty-eight thousand, seven hundred twenty-five".