25318 has 4 divisors (see below), whose sum is σ = 37980. Its totient is φ = 12658.

The previous prime is 25309. The next prime is 25321. The reversal of 25318 is 81352.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×25318² = 1282002248, which contains 22 as substring.

It is a plaindrome in base 12 and base 15.

It is a junction number, because it is equal to n+sod(n) for n = 25295 and 25304.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6328 + ... + 6331.

It is an arithmetic number, because the mean of its divisors is an integer number (9495).

2²⁵³¹⁸ is an apocalyptic number.

25318 is a deficient number, since it is larger than the sum of its proper divisors (12662).

25318 is a wasteful number, since it uses less digits than its factorization.

25318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12661.

The product of its digits is 240, while the sum is 19.

The square root of 25318 is about 159.1163096606. The cubic root of 25318 is about 29.3636337495.

It can be divided in two parts, 253 and 18, that multiplied together give a palindrome (4554).

The spelling of 25318 in words is "twenty-five thousand, three hundred eighteen".