129441525 has 24 divisors (see below), whose sum is σ = 218569344. Its totient is φ = 67564800.

The previous prime is 129441479. The next prime is 129441527. The reversal of 129441525 is 525144921.

It is not a de Polignac number, because 129441525 - 2¹⁰ = 129440501 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129441527) 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 23 ways as a sum of consecutive naturals, for example, 14836 + ... + 21885.

It is an arithmetic number, because the mean of its divisors is an integer number (9107056).

Almost surely, 2^129441525 is an apocalyptic number.

129441525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

129441525 is a deficient number, since it is larger than the sum of its proper divisors (89127819).

129441525 is a wasteful number, since it uses less digits than its factorization.

129441525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36781 (or 36776 counting only the distinct ones).

The product of its digits is 14400, while the sum is 33.

The square root of 129441525 is about 11377.2371426458. The cubic root of 129441525 is about 505.8532449993.

The spelling of 129441525 in words is "one hundred twenty-nine million, four hundred forty-one thousand, five hundred twenty-five".