13994425 has 6 divisors (see below), whose sum is σ = 17353118. Its totient is φ = 11195520.

The previous prime is 13994411. The next prime is 13994447. The reversal of 13994425 is 52449931.

It can be written as a sum of positive squares in 3 ways, for example, as 3671056 + 10323369 = 1916^2 + 3213^2 .

It is not a de Polignac number, because 13994425 - 2¹⁵ = 13961657 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 5 ways as a sum of consecutive naturals, for example, 279864 + ... + 279913.

Almost surely, 2^13994425 is an apocalyptic number.

It is an amenable number.

13994425 is a deficient number, since it is larger than the sum of its proper divisors (3358693).

13994425 is an equidigital number, since it uses as much as digits as its factorization.

13994425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 559787 (or 559782 counting only the distinct ones).

The product of its digits is 38880, while the sum is 37.

The square root of 13994425 is about 3740.9123218809. The cubic root of 13994425 is about 240.9822304007.

The spelling of 13994425 in words is "thirteen million, nine hundred ninety-four thousand, four hundred twenty-five".