25596 has 30 divisors (see below), whose sum is σ = 67760. Its totient is φ = 8424.

The previous prime is 25589. The next prime is 25601. The reversal of 25596 is 69552.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 285 + ... + 363.

2²⁵⁵⁹⁶ 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 25596, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33880).

25596 is an abundant number, since it is smaller than the sum of its proper divisors (42164).

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

25596 is a wasteful number, since it uses less digits than its factorization.

25596 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95 (or 84 counting only the distinct ones).

The product of its digits is 2700, while the sum is 27.

The square root of 25596 is about 159.9874995117. The cubic root of 25596 is about 29.4707168960.

Subtracting 25596 from its reverse (69552), we obtain a triangular number (43956 = T₂₉₆).

It can be divided in two parts, 255 and 96, that added together give a triangular number (351 = T₂₆).

The spelling of 25596 in words is "twenty-five thousand, five hundred ninety-six".