25685528 has 32 divisors (see below), whose sum is σ = 53291520. Its totient is φ = 11508000.

The previous prime is 25685519. The next prime is 25685531. The reversal of 25685528 is 82558652.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 4193 + ... + 8303.

It is an arithmetic number, because the mean of its divisors is an integer number (1665360).

Almost surely, 2^25685528 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 25685528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26645760).

25685528 is an abundant number, since it is smaller than the sum of its proper divisors (27605992).

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

25685528 is a wasteful number, since it uses less digits than its factorization.

25685528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4199 (or 4195 counting only the distinct ones).

The product of its digits is 192000, while the sum is 41.

The square root of 25685528 is about 5068.0891862713. The cubic root of 25685528 is about 295.0503715575.

The spelling of 25685528 in words is "twenty-five million, six hundred eighty-five thousand, five hundred twenty-eight".