13566425 has 24 divisors (see below), whose sum is σ = 18018936. Its totient is φ = 10096640.

The previous prime is 13566407. The next prime is 13566431. The reversal of 13566425 is 52466531.

13566425 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 12 ways, for example, as 3139984 + 10426441 = 1772^2 + 3229^2 .

It is not a de Polignac number, because 13566425 - 2⁸ = 13566169 is a prime.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13566391 and 13566400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 58109 + ... + 58341.

It is an arithmetic number, because the mean of its divisors is an integer number (750789).

Almost surely, 2^13566425 is an apocalyptic number.

It is an amenable number.

13566425 is a deficient number, since it is larger than the sum of its proper divisors (4452511).

13566425 is a wasteful number, since it uses less digits than its factorization.

13566425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397 (or 392 counting only the distinct ones).

The product of its digits is 21600, while the sum is 32.

The square root of 13566425 is about 3683.2628198379. The cubic root of 13566425 is about 238.5000490780.

The spelling of 13566425 in words is "thirteen million, five hundred sixty-six thousand, four hundred twenty-five".