25689868 has 24 divisors (see below), whose sum is σ = 46093712. Its totient is φ = 12524544.

The previous prime is 25689809. The next prime is 25689869. The reversal of 25689868 is 86898652.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (25689869) 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, 27871 + ... + 28777.

Almost surely, 2^25689868 is an apocalyptic number.

It is an amenable number.

25689868 is a deficient number, since it is larger than the sum of its proper divisors (20403844).

25689868 is a wasteful number, since it uses less digits than its factorization.

25689868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1081 (or 1079 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 52.

The square root of 25689868 is about 5068.5173374469. The cubic root of 25689868 is about 295.0669885217.

The spelling of 25689868 in words is "twenty-five million, six hundred eighty-nine thousand, eight hundred sixty-eight".