25238784 has 72 divisors (see below), whose sum is σ = 68433120. Its totient is φ = 8255488.

The previous prime is 25238779. The next prime is 25238791. The reversal of 25238784 is 48783252.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45034 + ... + 45590.

It is an arithmetic number, because the mean of its divisors is an integer number (950460).

Almost surely, 2^25238784 is an apocalyptic number.

25238784 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25238784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34216560).

25238784 is an abundant number, since it is smaller than the sum of its proper divisors (43194336).

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

25238784 is an equidigital number, since it uses as much as digits as its factorization.

25238784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635 (or 621 counting only the distinct ones).

The product of its digits is 107520, while the sum is 39.

The square root of 25238784 is about 5023.8216528854. The cubic root of 25238784 is about 293.3297703883.

The spelling of 25238784 in words is "twenty-five million, two hundred thirty-eight thousand, seven hundred eighty-four".