25653984 has 24 divisors (see below), whose sum is σ = 67341960. Its totient is φ = 8551296.

The previous prime is 25653959. The next prime is 25653989. The reversal of 25653984 is 48935652.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25653989) 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, 133519 + ... + 133710.

It is an arithmetic number, because the mean of its divisors is an integer number (2805915).

Almost surely, 2^25653984 is an apocalyptic number.

25653984 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

25653984 is an abundant number, since it is smaller than the sum of its proper divisors (41687976).

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

25653984 is a wasteful number, since it uses less digits than its factorization.

25653984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267242 (or 267234 counting only the distinct ones).

The product of its digits is 259200, while the sum is 42.

The square root of 25653984 is about 5064.9762092235. The cubic root of 25653984 is about 294.9295398129.

The spelling of 25653984 in words is "twenty-five million, six hundred fifty-three thousand, nine hundred eighty-four".