25365663 has 8 divisors (see below), whose sum is σ = 37578800. Its totient is φ = 16910424.

The previous prime is 25365629. The next prime is 25365677. The reversal of 25365663 is 36656352.

It is not a de Polignac number, because 25365663 - 2⁸ = 25365407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25365163) 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, 469708 + ... + 469761.

It is an arithmetic number, because the mean of its divisors is an integer number (4697350).

Almost surely, 2^25365663 is an apocalyptic number.

25365663 is a deficient number, since it is larger than the sum of its proper divisors (12213137).

25365663 is an equidigital number, since it uses as much as digits as its factorization.

25365663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 939478 (or 939472 counting only the distinct ones).

The product of its digits is 97200, while the sum is 36.

The square root of 25365663 is about 5036.4335595737. The cubic root of 25365663 is about 293.8204859977.

The spelling of 25365663 in words is "twenty-five million, three hundred sixty-five thousand, six hundred sixty-three".