25868928 has 128 divisors (see below), whose sum is σ = 74908800. Its totient is φ = 7884800.

The previous prime is 25868893. The next prime is 25868971. The reversal of 25868928 is 82986852.

It is a tau number, because it is divible by the number of its divisors (128).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 256078 + ... + 256178.

It is an arithmetic number, because the mean of its divisors is an integer number (585225).

Almost surely, 2^25868928 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 25868928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37454400).

25868928 is an abundant number, since it is smaller than the sum of its proper divisors (49039872).

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

25868928 is a wasteful number, since it uses less digits than its factorization.

25868928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170 (or 158 counting only the distinct ones).

The product of its digits is 552960, while the sum is 48.

The square root of 25868928 is about 5086.1506072864. The cubic root of 25868928 is about 295.7509470688.

It can be divided in two parts, 25868 and 928, that added together give a triangular number (26796 = T₂₃₁).

The spelling of 25868928 in words is "twenty-five million, eight hundred sixty-eight thousand, nine hundred twenty-eight".