13918825 has 6 divisors (see below), whose sum is σ = 17259374. Its totient is φ = 11135040.

The previous prime is 13918823. The next prime is 13918843. The reversal of 13918825 is 52881931.

It can be written as a sum of positive squares in 3 ways, for example, as 2277081 + 11641744 = 1509^2 + 3412^2 .

It is not a de Polignac number, because 13918825 - 2¹ = 13918823 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13918823) by changing a digit.

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, 278352 + ... + 278401.

Almost surely, 2^13918825 is an apocalyptic number.

It is an amenable number.

13918825 is a deficient number, since it is larger than the sum of its proper divisors (3340549).

13918825 is an equidigital number, since it uses as much as digits as its factorization.

13918825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556763 (or 556758 counting only the distinct ones).

The product of its digits is 17280, while the sum is 37.

The square root of 13918825 is about 3730.7941513839. The cubic root of 13918825 is about 240.5475058263.

The spelling of 13918825 in words is "thirteen million, nine hundred eighteen thousand, eight hundred twenty-five".