25859328 has 72 divisors (see below), whose sum is σ = 75104736. Its totient is φ = 7833600.

The previous prime is 25859311. The next prime is 25859341. The reversal of 25859328 is 82395852.

It is a super-2 number, since 2×25859328² = 1337409689223168, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25859328.

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, 6918 + ... + 9978.

Almost surely, 2^25859328 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25859328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37552368).

25859328 is an abundant number, since it is smaller than the sum of its proper divisors (49245408).

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

25859328 is a wasteful number, since it uses less digits than its factorization.

25859328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3091 (or 3077 counting only the distinct ones).

The product of its digits is 172800, while the sum is 42.

The square root of 25859328 is about 5085.2067804564. The cubic root of 25859328 is about 295.7143579947.

Subtracting from 25859328 its product of digits (172800), we obtain a triangular number (25686528 = T₇₁₆₇).

The spelling of 25859328 in words is "twenty-five million, eight hundred fifty-nine thousand, three hundred twenty-eight".