129898525 has 12 divisors (see below), whose sum is σ = 166271104. Its totient is φ = 100566000.

The previous prime is 129898523. The next prime is 129898529. The reversal of 129898525 is 525898921.

It is not a de Polignac number, because 129898525 - 2¹ = 129898523 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129898523) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 83031 + ... + 84580.

Almost surely, 2^129898525 is an apocalyptic number.

It is an amenable number.

129898525 is a deficient number, since it is larger than the sum of its proper divisors (36372579).

129898525 is a wasteful number, since it uses less digits than its factorization.

129898525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167652 (or 167647 counting only the distinct ones).

The product of its digits is 518400, while the sum is 49.

The square root of 129898525 is about 11397.3034091403. The cubic root of 129898525 is about 506.4478594581.

The spelling of 129898525 in words is "one hundred twenty-nine million, eight hundred ninety-eight thousand, five hundred twenty-five".