25366649 has 16 divisors (see below), whose sum is σ = 32649216. Its totient is φ = 19126800.

The previous prime is 25366643. The next prime is 25366661. The reversal of 25366649 is 94666352.

It is not a de Polignac number, because 25366649 - 2¹² = 25362553 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25366643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2927 + ... + 7700.

It is an arithmetic number, because the mean of its divisors is an integer number (2040576).

Almost surely, 2^25366649 is an apocalyptic number.

It is an amenable number.

25366649 is a deficient number, since it is larger than the sum of its proper divisors (7282567).

25366649 is a wasteful number, since it uses less digits than its factorization.

25366649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10676.

The product of its digits is 233280, while the sum is 41.

The square root of 25366649 is about 5036.5314453501. The cubic root of 25366649 is about 293.8242930241.

The spelling of 25366649 in words is "twenty-five million, three hundred sixty-six thousand, six hundred forty-nine".