25507863 has 12 divisors (see below), whose sum is σ = 37743888. Its totient is φ = 16590240.

The previous prime is 25507831. The next prime is 25507877. The reversal of 25507863 is 36870552.

It is not a de Polignac number, because 25507863 - 2⁵ = 25507831 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25507813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34195 + ... + 34932.

It is an arithmetic number, because the mean of its divisors is an integer number (3145324).

Almost surely, 2^25507863 is an apocalyptic number.

25507863 is a deficient number, since it is larger than the sum of its proper divisors (12236025).

25507863 is a wasteful number, since it uses less digits than its factorization.

25507863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69174 (or 69171 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 25507863 is about 5050.5309621861. The cubic root of 25507863 is about 294.3685160918.

The spelling of 25507863 in words is "twenty-five million, five hundred seven thousand, eight hundred sixty-three".