129153525 has 24 divisors (see below), whose sum is σ = 213956544. Its totient is φ = 68745600.

The previous prime is 129153499. The next prime is 129153529. The reversal of 129153525 is 525351921.

It is not a de Polignac number, because 129153525 - 2¹² = 129149429 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129153529) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44880 + ... + 47670.

It is an arithmetic number, because the mean of its divisors is an integer number (8914856).

Almost surely, 2^129153525 is an apocalyptic number.

129153525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

129153525 is a deficient number, since it is larger than the sum of its proper divisors (84803019).

129153525 is a wasteful number, since it uses less digits than its factorization.

129153525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3421 (or 3416 counting only the distinct ones).

The product of its digits is 13500, while the sum is 33.

The square root of 129153525 is about 11364.5732431975. The cubic root of 129153525 is about 505.4778015554.

The spelling of 129153525 in words is "one hundred twenty-nine million, one hundred fifty-three thousand, five hundred twenty-five".