25861888 has 72 divisors (see below), whose sum is σ = 58662800. Its totient is φ = 11280384.

The previous prime is 25861873. The next prime is 25861909. The reversal of 25861888 is 88816852.

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, 63028 + ... + 63436.

Almost surely, 2^25861888 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 25861888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29331400).

25861888 is an abundant number, since it is smaller than the sum of its proper divisors (32800912).

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

25861888 is a wasteful number, since it uses less digits than its factorization.

25861888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457 (or 443 counting only the distinct ones).

The product of its digits is 245760, while the sum is 46.

The square root of 25861888 is about 5085.4584847386. The cubic root of 25861888 is about 295.7241159664.

It can be divided in two parts, 2 and 5861888, that multiplied together give a square (11723776 = 3424²).

The spelling of 25861888 in words is "twenty-five million, eight hundred sixty-one thousand, eight hundred eighty-eight".