129525 has 24 divisors (see below), whose sum is σ = 235104. Its totient is φ = 62400.

The previous prime is 129517. The next prime is 129527. The reversal of 129525 is 525921.

It is not a de Polignac number, because 129525 - 2³ = 129517 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 129495 and 129504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 747 + ... + 903.

It is an arithmetic number, because the mean of its divisors is an integer number (9796).

2¹²⁹⁵²⁵ is an apocalyptic number.

129525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

129525 is a deficient number, since it is larger than the sum of its proper divisors (105579).

129525 is a wasteful number, since it uses less digits than its factorization.

129525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181 (or 176 counting only the distinct ones).

The product of its digits is 900, while the sum is 24.

The square root of 129525 is about 359.8958182586. The cubic root of 129525 is about 50.5961960823.

The spelling of 129525 in words is "one hundred twenty-nine thousand, five hundred twenty-five".