13718825 has 6 divisors (see below), whose sum is σ = 17011374. Its totient is φ = 10975040.

The previous prime is 13718819. The next prime is 13718843. The reversal of 13718825 is 52881731.

It can be written as a sum of positive squares in 3 ways, for example, as 2676496 + 11042329 = 1636^2 + 3323^2 .

It is not a de Polignac number, because 13718825 - 2¹⁴ = 13702441 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 274352 + ... + 274401.

It is an arithmetic number, because the mean of its divisors is an integer number (2835229).

Almost surely, 2^13718825 is an apocalyptic number.

It is an amenable number.

13718825 is a deficient number, since it is larger than the sum of its proper divisors (3292549).

13718825 is an equidigital number, since it uses as much as digits as its factorization.

13718825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548763 (or 548758 counting only the distinct ones).

The product of its digits is 13440, while the sum is 35.

The square root of 13718825 is about 3703.8932220030. The cubic root of 13718825 is about 239.3897982521.

The spelling of 13718825 in words is "thirteen million, seven hundred eighteen thousand, eight hundred twenty-five".