25803984 has 20 divisors (see below), whose sum is σ = 66660416. Its totient is φ = 8601312.

The previous prime is 25803983. The next prime is 25803989. The reversal of 25803984 is 48930852.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25803983) 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, 268744 + ... + 268839.

Almost surely, 2^25803984 is an apocalyptic number.

25803984 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

25803984 is an abundant number, since it is smaller than the sum of its proper divisors (40856432).

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

25803984 is a wasteful number, since it uses less digits than its factorization.

25803984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 537594 (or 537588 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 25803984 is about 5079.7621991585. The cubic root of 25803984 is about 295.5032452024.

The spelling of 25803984 in words is "twenty-five million, eight hundred three thousand, nine hundred eighty-four".