25304840 has 96 divisors (see below), whose sum is σ = 66312000. Its totient is φ = 8616960.

The previous prime is 25304837. The next prime is 25304861. The reversal of 25304840 is 4840352.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 127061 + ... + 127259.

It is an arithmetic number, because the mean of its divisors is an integer number (690750).

Almost surely, 2^25304840 is an apocalyptic number.

25304840 is a gapful number since it is divisible by the number (20) 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 25304840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33156000).

25304840 is an abundant number, since it is smaller than the sum of its proper divisors (41007160).

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

25304840 is a wasteful number, since it uses less digits than its factorization.

25304840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255 (or 234 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 25304840 is about 5030.3916348531. The cubic root of 25304840 is about 293.5854524342.

The spelling of 25304840 in words is "twenty-five million, three hundred four thousand, eight hundred forty".