25863156 has 72 divisors (see below), whose sum is σ = 71879808. Its totient is φ = 7776000.

The previous prime is 25863151. The next prime is 25863163. The reversal of 25863156 is 65136852.

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 25863156.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25863151) 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, 95301 + ... + 95571.

Almost surely, 2^25863156 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 25863156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35939904).

25863156 is an abundant number, since it is smaller than the sum of its proper divisors (46016652).

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

25863156 is a wasteful number, since it uses less digits than its factorization.

25863156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533 (or 528 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 25863156 is about 5085.5831524025. The cubic root of 25863156 is about 295.7289489733.

The spelling of 25863156 in words is "twenty-five million, eight hundred sixty-three thousand, one hundred fifty-six".