13425666 has 64 divisors (see below), whose sum is σ = 30412800. Its totient is φ = 3931200.

The previous prime is 13425653. The next prime is 13425679. The reversal of 13425666 is 66652431.

It is an interprime number because it is at equal distance from previous prime (13425653) and next prime (13425679).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 102421 + ... + 102551.

It is an arithmetic number, because the mean of its divisors is an integer number (475200).

Almost surely, 2^13425666 is an apocalyptic number.

13425666 is an abundant number, since it is smaller than the sum of its proper divisors (16987134).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13425666 is a wasteful number, since it uses less digits than its factorization.

13425666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215.

The product of its digits is 25920, while the sum is 33.

The square root of 13425666 is about 3664.1050749126. The cubic root of 13425666 is about 237.6723240585.

The spelling of 13425666 in words is "thirteen million, four hundred twenty-five thousand, six hundred sixty-six".