25853 has 4 divisors (see below), whose sum is σ = 26208. Its totient is φ = 25500.

The previous prime is 25849. The next prime is 25867. The reversal of 25853 is 35852.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 25853 - 2² = 25849 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25873) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23 + ... + 228.

It is an arithmetic number, because the mean of its divisors is an integer number (6552).

2²⁵⁸⁵³ is an apocalyptic number.

It is an amenable number.

25853 is a deficient number, since it is larger than the sum of its proper divisors (355).

25853 is a wasteful number, since it uses less digits than its factorization.

25853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354.

The product of its digits is 1200, while the sum is 23.

The square root of 25853 is about 160.7886811937. The cubic root of 25853 is about 29.5690234744.

Subtracting 25853 from its reverse (35852), we obtain a palindrome (9999).

It can be divided in two parts, 25 and 853, that added together give a palindrome (878).

The spelling of 25853 in words is "twenty-five thousand, eight hundred fifty-three".