13825915 has 4 divisors (see below), whose sum is σ = 16591104. Its totient is φ = 11060728.

The previous prime is 13825909. The next prime is 13825937. The reversal of 13825915 is 51952831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51952831 = 7 ⋅7421833.

It is a cyclic number.

It is not a de Polignac number, because 13825915 - 2¹⁵ = 13793147 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 (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1382587 + ... + 1382596.

It is an arithmetic number, because the mean of its divisors is an integer number (4147776).

Almost surely, 2^13825915 is an apocalyptic number.

13825915 is a deficient number, since it is larger than the sum of its proper divisors (2765189).

13825915 is an equidigital number, since it uses as much as digits as its factorization.

13825915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2765188.

The product of its digits is 10800, while the sum is 34.

The square root of 13825915 is about 3718.3215299379. The cubic root of 13825915 is about 240.0110816642.

The spelling of 13825915 in words is "thirteen million, eight hundred twenty-five thousand, nine hundred fifteen".