129332565 has 48 divisors (see below), whose sum is σ = 240488640. Its totient is φ = 65941920.

The previous prime is 129332507. The next prime is 129332591. The reversal of 129332565 is 565233921.

129332565 is a `hidden beast` number, since 1 + 2 + 93 + 3 + 2 + 565 = 666.

It is not a de Polignac number, because 129332565 - 2⁸ = 129332309 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 70510 + ... + 72320.

It is an arithmetic number, because the mean of its divisors is an integer number (5010180).

Almost surely, 2^129332565 is an apocalyptic number.

129332565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

129332565 is a deficient number, since it is larger than the sum of its proper divisors (111156075).

129332565 is a wasteful number, since it uses less digits than its factorization.

129332565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1871 (or 1842 counting only the distinct ones).

The product of its digits is 48600, while the sum is 36.

The square root of 129332565 is about 11372.4476257312. The cubic root of 129332565 is about 505.7112677827.

The spelling of 129332565 in words is "one hundred twenty-nine million, three hundred thirty-two thousand, five hundred sixty-five".