129325551 has 16 divisors (see below), whose sum is σ = 177021408. Its totient is φ = 83952000.

The previous prime is 129325519. The next prime is 129325561. The reversal of 129325551 is 155523921.

It is not a de Polignac number, because 129325551 - 2⁵ = 129325519 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129325561) 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 15 ways as a sum of consecutive naturals, for example, 14985 + ... + 21981.

It is an arithmetic number, because the mean of its divisors is an integer number (11063838).

Almost surely, 2^129325551 is an apocalyptic number.

129325551 is a deficient number, since it is larger than the sum of its proper divisors (47695857).

129325551 is a wasteful number, since it uses less digits than its factorization.

129325551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7162.

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

The square root of 129325551 is about 11372.1392446628. The cubic root of 129325551 is about 505.7021256589.

The spelling of 129325551 in words is "one hundred twenty-nine million, three hundred twenty-five thousand, five hundred fifty-one".