25968987 has 12 divisors (see below), whose sum is σ = 40920984. Its totient is φ = 15738720.

The previous prime is 25968977. The next prime is 25968989. The reversal of 25968987 is 78986952.

It is a happy number.

It is not a de Polignac number, because 25968987 - 2¹² = 25964891 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25968989) 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, 131058 + ... + 131255.

It is an arithmetic number, because the mean of its divisors is an integer number (3410082).

Almost surely, 2^25968987 is an apocalyptic number.

25968987 is a deficient number, since it is larger than the sum of its proper divisors (14951997).

25968987 is a wasteful number, since it uses less digits than its factorization.

25968987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262330 (or 262327 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 54.

The square root of 25968987 is about 5095.9775313476. The cubic root of 25968987 is about 296.1317703729.

The spelling of 25968987 in words is "twenty-five million, nine hundred sixty-eight thousand, nine hundred eighty-seven".