25889856 has 112 divisors (see below), whose sum is σ = 74127360. Its totient is φ = 7948800.

The previous prime is 25889813. The next prime is 25889873. The reversal of 25889856 is 65898852.

It is a junction number, because it is equal to n+sod(n) for n = 25889799 and 25889808.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 171381 + ... + 171531.

Almost surely, 2^25889856 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 25889856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37063680).

25889856 is an abundant number, since it is smaller than the sum of its proper divisors (48237504).

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

25889856 is a wasteful number, since it uses less digits than its factorization.

25889856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232 (or 222 counting only the distinct ones).

The product of its digits is 1382400, while the sum is 51.

The square root of 25889856 is about 5088.2075429369. The cubic root of 25889856 is about 295.8306798854.

The spelling of 25889856 in words is "twenty-five million, eight hundred eighty-nine thousand, eight hundred fifty-six".