129825165 has 8 divisors (see below), whose sum is σ = 207720288. Its totient is φ = 69240080.

The previous prime is 129825121. The next prime is 129825181. The reversal of 129825165 is 561528921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 129825165 - 2¹⁰ = 129824141 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4327491 + ... + 4327520.

It is an arithmetic number, because the mean of its divisors is an integer number (25965036).

Almost surely, 2^129825165 is an apocalyptic number.

129825165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

129825165 is a deficient number, since it is larger than the sum of its proper divisors (77895123).

129825165 is an equidigital number, since it uses as much as digits as its factorization.

129825165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8655019.

The product of its digits is 43200, while the sum is 39.

The square root of 129825165 is about 11394.0846495012. The cubic root of 129825165 is about 506.3525029450.

The spelling of 129825165 in words is "one hundred twenty-nine million, eight hundred twenty-five thousand, one hundred sixty-five".