25643360 has 48 divisors (see below), whose sum is σ = 60900336. Its totient is φ = 10203648.

The previous prime is 25643357. The next prime is 25643383. The reversal of 25643360 is 6334652.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46607 + ... + 47153.

It is an arithmetic number, because the mean of its divisors is an integer number (1268757).

Almost surely, 2^25643360 is an apocalyptic number.

25643360 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 25643360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30450168).

25643360 is an abundant number, since it is smaller than the sum of its proper divisors (35256976).

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

25643360 is a wasteful number, since it uses less digits than its factorization.

25643360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 855 (or 847 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 29.

The square root of 25643360 is about 5063.9273296524. The cubic root of 25643360 is about 294.8888214581. Note that the first 4 decimals are identical.

The spelling of 25643360 in words is "twenty-five million, six hundred forty-three thousand, three hundred sixty".