129492325 has 12 divisors (see below), whose sum is σ = 163204708. Its totient is φ = 101894400.

The previous prime is 129492289. The next prime is 129492329. The reversal of 129492325 is 523294921.

129492325 = 8046² + 8047².

It can be written as a sum of positive squares in 6 ways, for example, as 41770369 + 87721956 = 6463^2 + 9366^2 .

It is not a de Polignac number, because 129492325 - 2²⁵ = 95937893 is a prime.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129492329) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40932 + ... + 43981.

Almost surely, 2^129492325 is an apocalyptic number.

129492325 is the 8047-th centered square number.

It is an amenable number.

129492325 is a deficient number, since it is larger than the sum of its proper divisors (33712383).

129492325 is an equidigital number, since it uses as much as digits as its factorization.

129492325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84984 (or 84979 counting only the distinct ones).

The product of its digits is 38880, while the sum is 37.

The square root of 129492325 is about 11379.4694516045. The cubic root of 129492325 is about 505.9194112570.

The spelling of 129492325 in words is "one hundred twenty-nine million, four hundred ninety-two thousand, three hundred twenty-five".