13425866 has 4 divisors (see below), whose sum is σ = 20138802. Its totient is φ = 6712932.

The previous prime is 13425851. The next prime is 13425877. The reversal of 13425866 is 66852431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 66852431 = 19 ⋅3518549.

It can be written as a sum of positive squares in only one way, i.e., 10080625 + 3345241 = 3175^2 + 1829^2 .

It is a Curzon 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 as a sum of consecutive naturals, namely, 3356465 + ... + 3356468.

Almost surely, 2^13425866 is an apocalyptic number.

13425866 is a deficient number, since it is larger than the sum of its proper divisors (6712936).

13425866 is an equidigital number, since it uses as much as digits as its factorization.

13425866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6712935.

The product of its digits is 34560, while the sum is 35.

The square root of 13425866 is about 3664.1323666047. The cubic root of 13425866 is about 237.6735042416.

The spelling of 13425866 in words is "thirteen million, four hundred twenty-five thousand, eight hundred sixty-six".