25783 has 8 divisors (see below), whose sum is σ = 28800. Its totient is φ = 22968.

The previous prime is 25771. The next prime is 25793. The reversal of 25783 is 38752.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25783 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25703) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 408 + ... + 466.

It is an arithmetic number, because the mean of its divisors is an integer number (3600).

2²⁵⁷⁸³ is an apocalyptic number.

25783 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

25783 is a deficient number, since it is larger than the sum of its proper divisors (3017).

25783 is a wasteful number, since it uses less digits than its factorization.

25783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101.

The product of its digits is 1680, while the sum is 25.

The square root of 25783 is about 160.5708566335. The cubic root of 25783 is about 29.5423121636.

It can be divided in two parts, 25 and 783, that added together give a palindrome (808).

The spelling of 25783 in words is "twenty-five thousand, seven hundred eighty-three".