25782 has 8 divisors (see below), whose sum is σ = 51576. Its totient is φ = 8592.

The previous prime is 25771. The next prime is 25793. The reversal of 25782 is 28752.

It is an interprime number because it is at equal distance from previous prime (25771) and next prime (25793).

It is a sphenic number, since it is the product of 3 distinct primes.

25782 is an admirable number.

It is a nialpdrome in base 13.

It is a congruent number.

It is an unprimeable number.

25782 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2143 + ... + 2154.

It is an arithmetic number, because the mean of its divisors is an integer number (6447).

2²⁵⁷⁸² is an apocalyptic number.

25782 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25788).

25782 is a wasteful number, since it uses less digits than its factorization.

25782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4302.

The product of its digits is 1120, while the sum is 24.

The square root of 25782 is about 160.5677427132. The cubic root of 25782 is about 29.5419302233.

The spelling of 25782 in words is "twenty-five thousand, seven hundred eighty-two".