25859856 has 160 divisors (see below), whose sum is σ = 80137728. Its totient is φ = 7096320.

The previous prime is 25859849. The next prime is 25859857. The reversal of 25859856 is 65895852.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (25859857) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 385935 + ... + 386001.

Almost surely, 2^25859856 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 25859856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40068864).

25859856 is an abundant number, since it is smaller than the sum of its proper divisors (54277872).

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

25859856 is a wasteful number, since it uses less digits than its factorization.

25859856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149 (or 143 counting only the distinct ones).

The product of its digits is 864000, while the sum is 48.

The square root of 25859856 is about 5085.2586954844. The cubic root of 25859856 is about 295.7163706291.

The spelling of 25859856 in words is "twenty-five million, eight hundred fifty-nine thousand, eight hundred fifty-six".