25523256 has 128 divisors (see below), whose sum is σ = 75893760. Its totient is φ = 7124480.

The previous prime is 25523243. The next prime is 25523287. The reversal of 25523256 is 65232552.

Its product of digits (18000) is a multiple of the sum of its prime divisors (80).

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 543025 + ... + 543071.

It is an arithmetic number, because the mean of its divisors is an integer number (592920).

Almost surely, 2^25523256 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 25523256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37946880).

25523256 is an abundant number, since it is smaller than the sum of its proper divisors (50370504).

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

25523256 is a wasteful number, since it uses less digits than its factorization.

25523256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106 (or 80 counting only the distinct ones).

The product of its digits is 18000, while the sum is 30.

The square root of 25523256 is about 5052.0546315336. The cubic root of 25523256 is about 294.4277174892.

The spelling of 25523256 in words is "twenty-five million, five hundred twenty-three thousand, two hundred fifty-six".