25666113 has 8 divisors (see below), whose sum is σ = 37332576. Its totient is φ = 15555200.

The previous prime is 25666111. The next prime is 25666117. The reversal of 25666113 is 31166652.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25666113 - 2¹ = 25666111 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25666111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 388848 + ... + 388913.

It is an arithmetic number, because the mean of its divisors is an integer number (4666572).

Almost surely, 2^25666113 is an apocalyptic number.

It is an amenable number.

25666113 is a deficient number, since it is larger than the sum of its proper divisors (11666463).

25666113 is a wasteful number, since it uses less digits than its factorization.

25666113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777775.

The product of its digits is 6480, while the sum is 30.

The square root of 25666113 is about 5066.1734080073. The cubic root of 25666113 is about 294.9760126048.

The spelling of 25666113 in words is "twenty-five million, six hundred sixty-six thousand, one hundred thirteen".