129025315 has 4 divisors (see below), whose sum is σ = 154830384. Its totient is φ = 103220248.

The previous prime is 129025301. The next prime is 129025339. The reversal of 129025315 is 513520921.

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

It is a cyclic number.

It is not a de Polignac number, because 129025315 - 2¹³ = 129017123 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12902527 + ... + 12902536.

It is an arithmetic number, because the mean of its divisors is an integer number (38707596).

Almost surely, 2^129025315 is an apocalyptic number.

129025315 is a deficient number, since it is larger than the sum of its proper divisors (25805069).

129025315 is an equidigital number, since it uses as much as digits as its factorization.

129025315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25805068.

The product of its (nonzero) digits is 2700, while the sum is 28.

The square root of 129025315 is about 11358.9310676665. The cubic root of 129025315 is about 505.3104844925.

The spelling of 129025315 in words is "one hundred twenty-nine million, twenty-five thousand, three hundred fifteen".