129525365 has 4 divisors (see below), whose sum is σ = 155430444. Its totient is φ = 103620288.

The previous prime is 129525317. The next prime is 129525379. The reversal of 129525365 is 563525921.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 94750756 + 34774609 = 9734^2 + 5897^2 .

It is a cyclic number.

It is not a de Polignac number, because 129525365 - 2⁶ = 129525301 is a prime.

It is a super-3 number, since 3×129525365³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12952532 + ... + 12952541.

It is an arithmetic number, because the mean of its divisors is an integer number (38857611).

Almost surely, 2^129525365 is an apocalyptic number.

It is an amenable number.

129525365 is a deficient number, since it is larger than the sum of its proper divisors (25905079).

129525365 is an equidigital number, since it uses as much as digits as its factorization.

129525365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25905078.

The product of its digits is 81000, while the sum is 38.

The square root of 129525365 is about 11380.9210962909. The cubic root of 129525365 is about 505.9624360872.

The spelling of 129525365 in words is "one hundred twenty-nine million, five hundred twenty-five thousand, three hundred sixty-five".