25660863 has 12 divisors (see below), whose sum is σ = 37119160. Its totient is φ = 17082576.

The previous prime is 25660829. The next prime is 25660883. The reversal of 25660863 is 36806652.

It is not a de Polignac number, because 25660863 - 2¹⁰ = 25659839 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 (25660823) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6333 + ... + 9561.

Almost surely, 2^25660863 is an apocalyptic number.

25660863 is a deficient number, since it is larger than the sum of its proper divisors (11458297).

25660863 is a wasteful number, since it uses less digits than its factorization.

25660863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4118 (or 4115 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 25660863 is about 5065.6552389597. The cubic root of 25660863 is about 294.9558987986.

The spelling of 25660863 in words is "twenty-five million, six hundred sixty thousand, eight hundred sixty-three".