25856226 has 128 divisors (see below), whose sum is σ = 69120000. Its totient is φ = 7076160.

The previous prime is 25856221. The next prime is 25856227. The reversal of 25856226 is 62265852.

25856226 is a `hidden beast` number, since 25 + 8 + 5 + 622 + 6 = 666.

It is not an unprimeable number, because it can be changed into a prime (25856221) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 327255 + ... + 327333.

It is an arithmetic number, because the mean of its divisors is an integer number (540000).

Almost surely, 2^25856226 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25856226, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34560000).

25856226 is an abundant number, since it is smaller than the sum of its proper divisors (43263774).

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

25856226 is a wasteful number, since it uses less digits than its factorization.

25856226 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 57600, while the sum is 36.

The square root of 25856226 is about 5084.9017689627. The cubic root of 25856226 is about 295.7025332143.

The spelling of 25856226 in words is "twenty-five million, eight hundred fifty-six thousand, two hundred twenty-six".