25243 has 2 divisors, whose sum is σ = 25244. Its totient is φ = 25242.

The previous prime is 25237. The next prime is 25247. The reversal of 25243 is 34252.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25243 is a prime.

It is not a weakly prime, because it can be changed into another prime (25247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12621 + 12622.

It is an arithmetic number, because the mean of its divisors is an integer number (12622).

2²⁵²⁴³ is an apocalyptic number.

25243 is a deficient number, since it is larger than the sum of its proper divisors (1).

25243 is an equidigital number, since it uses as much as digits as its factorization.

25243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 240, while the sum is 16.

The square root of 25243 is about 158.8804582068. The cubic root of 25243 is about 29.3346102520.

Adding to 25243 its reverse (34252), we get a palindrome (59495).

Subtracting 25243 from its reverse (34252), we obtain a palindrome (9009).

The spelling of 25243 in words is "twenty-five thousand, two hundred forty-three".