13859425 has 6 divisors (see below), whose sum is σ = 17185718. Its totient is φ = 11087520.

The previous prime is 13859411. The next prime is 13859431. The reversal of 13859425 is 52495831.

It can be written as a sum of positive squares in 3 ways, for example, as 4477456 + 9381969 = 2116^2 + 3063^2 .

It is not a de Polignac number, because 13859425 - 2⁵ = 13859393 is a prime.

It is a super-2 number, since 2×13859425² = 384167322661250, which contains 22 as substring.

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 5 ways as a sum of consecutive naturals, for example, 277164 + ... + 277213.

Almost surely, 2^13859425 is an apocalyptic number.

It is an amenable number.

13859425 is a deficient number, since it is larger than the sum of its proper divisors (3326293).

13859425 is an equidigital number, since it uses as much as digits as its factorization.

13859425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 554387 (or 554382 counting only the distinct ones).

The product of its digits is 43200, while the sum is 37.

The square root of 13859425 is about 3722.8248682956. The cubic root of 13859425 is about 240.2048309219.

The spelling of 13859425 in words is "thirteen million, eight hundred fifty-nine thousand, four hundred twenty-five".