25784984 has 16 divisors (see below), whose sum is σ = 48411000. Its totient is φ = 12875392.

The previous prime is 25784981. The next prime is 25784989. The reversal of 25784984 is 48948752.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25784981) 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 3 ways as a sum of consecutive naturals, for example, 6167 + ... + 9465.

Almost surely, 2^25784984 is an apocalyptic number.

It is an amenable number.

25784984 is a deficient number, since it is larger than the sum of its proper divisors (22626016).

25784984 is a wasteful number, since it uses less digits than its factorization.

25784984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4282 (or 4278 counting only the distinct ones).

The product of its digits is 645120, while the sum is 47.

The square root of 25784984 is about 5077.8916884865. The cubic root of 25784984 is about 295.4306990372.

The spelling of 25784984 in words is "twenty-five million, seven hundred eighty-four thousand, nine hundred eighty-four".