13666325 has 24 divisors (see below), whose sum is σ = 17707200. Its totient is φ = 10454400.

The previous prime is 13666321. The next prime is 13666369. The reversal of 13666325 is 52366631.

It is not a de Polignac number, because 13666325 - 2² = 13666321 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13666291 and 13666300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13666321) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 68576 + ... + 68774.

It is an arithmetic number, because the mean of its divisors is an integer number (737800).

Almost surely, 2^13666325 is an apocalyptic number.

It is an amenable number.

13666325 is a deficient number, since it is larger than the sum of its proper divisors (4040875).

13666325 is a wasteful number, since it uses less digits than its factorization.

13666325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317 (or 312 counting only the distinct ones).

The product of its digits is 19440, while the sum is 32.

The square root of 13666325 is about 3696.7992912789. The cubic root of 13666325 is about 239.0840376028.

The spelling of 13666325 in words is "thirteen million, six hundred sixty-six thousand, three hundred twenty-five".