25864288 has 48 divisors (see below), whose sum is σ = 53887680. Its totient is φ = 12199936.

The previous prime is 25864277. The next prime is 25864291. The reversal of 25864288 is 88246852.

It is a super-2 number, since 2×25864288² = 1337922787493888, which contains 22 as substring.

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, 43320 + ... + 43912.

It is an arithmetic number, because the mean of its divisors is an integer number (1122660).

Almost surely, 2^25864288 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 25864288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26943840).

25864288 is an abundant number, since it is smaller than the sum of its proper divisors (28023392).

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

25864288 is a wasteful number, since it uses less digits than its factorization.

25864288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 679 (or 671 counting only the distinct ones).

The product of its digits is 245760, while the sum is 43.

The square root of 25864288 is about 5085.6944461892. The cubic root of 25864288 is about 295.7332634801.

It can be divided in two parts, 258 and 64288, that added together give a palindrome (64546).

The spelling of 25864288 in words is "twenty-five million, eight hundred sixty-four thousand, two hundred eighty-eight".