25787868 has 12 divisors (see below), whose sum is σ = 60171720. Its totient is φ = 8595952.

The previous prime is 25787863. The next prime is 25787903. The reversal of 25787868 is 86878752.

It is a tau number, because it is divible by the number of its divisors (12).

It is a nialpdrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 25787868.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25787863) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1074483 + ... + 1074506.

It is an arithmetic number, because the mean of its divisors is an integer number (5014310).

Almost surely, 2^25787868 is an apocalyptic number.

It is an amenable number.

25787868 is an abundant number, since it is smaller than the sum of its proper divisors (34383852).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25787868 is a wasteful number, since it uses less digits than its factorization.

25787868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2148996 (or 2148994 counting only the distinct ones).

The product of its digits is 1505280, while the sum is 51.

The square root of 25787868 is about 5078.1756566704. The cubic root of 25787868 is about 295.4417130751.

The spelling of 25787868 in words is "twenty-five million, seven hundred eighty-seven thousand, eight hundred sixty-eight".