25869888 has 112 divisors (see below), whose sum is σ = 83027520. Its totient is φ = 7833600.

The previous prime is 25869859. The next prime is 25869889. The reversal of 25869888 is 88896852.

It is a super-2 number, since 2×25869888² = 1338502210265088, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (25869889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18328 + ... + 19688.

Almost surely, 2^25869888 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 25869888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41513760).

25869888 is an abundant number, since it is smaller than the sum of its proper divisors (57157632).

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

25869888 is a wasteful number, since it uses less digits than its factorization.

25869888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1393 (or 1377 counting only the distinct ones).

The product of its digits is 2211840, while the sum is 54.

The square root of 25869888 is about 5086.2449803367. The cubic root of 25869888 is about 295.7546054784.

The spelling of 25869888 in words is "twenty-five million, eight hundred sixty-nine thousand, eight hundred eighty-eight".