25358256 has 120 divisors (see below), whose sum is σ = 88518144. Its totient is φ = 6583680.

The previous prime is 25358233. The next prime is 25358257. The reversal of 25358256 is 65285352.

It is a happy number.

25358256 is a `hidden beast` number, since 25 + 3 + 582 + 56 = 666.

It is a super-2 number, since 2×25358256² = 1286082294723072, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 25358256.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25358257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9945 + ... + 12231.

Almost surely, 2^25358256 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 25358256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44259072).

25358256 is an abundant number, since it is smaller than the sum of its proper divisors (63159888).

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

25358256 is a wasteful number, since it uses less digits than its factorization.

25358256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2319 (or 2310 counting only the distinct ones).

The product of its digits is 72000, while the sum is 36.

The square root of 25358256 is about 5035.6981641079. The cubic root of 25358256 is about 293.7918838120.

It can be divided in two parts, 25 and 358256, that added together give a triangular number (358281 = T₈₄₆).

The spelling of 25358256 in words is "twenty-five million, three hundred fifty-eight thousand, two hundred fifty-six".