25869992 has 16 divisors (see below), whose sum is σ = 48585300. Its totient is φ = 12913920.

The previous prime is 25869979. The next prime is 25870003. The reversal of 25869992 is 29996852.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 23755876 + 2114116 = 4874^2 + 1454^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 25869992.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3392 + ... + 7952.

Almost surely, 2^25869992 is an apocalyptic number.

It is an amenable number.

25869992 is a deficient number, since it is larger than the sum of its proper divisors (22715308).

25869992 is a wasteful number, since it uses less digits than its factorization.

25869992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5276 (or 5272 counting only the distinct ones).

The product of its digits is 699840, while the sum is 50.

The square root of 25869992 is about 5086.2552039787. The cubic root of 25869992 is about 295.7550018006.

The spelling of 25869992 in words is "twenty-five million, eight hundred sixty-nine thousand, nine hundred ninety-two".