24965 has 4 divisors (see below), whose sum is σ = 29964. Its totient is φ = 19968.

The previous prime is 24953. The next prime is 24967. The reversal of 24965 is 56942.

It is a Cunningham number, because it is equal to 158²+1.

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

It can be written as a sum of positive squares in 2 ways, for example, as 8836 + 16129 = 94^2 + 127^2 .

It is a cyclic number.

It is not a de Polignac number, because 24965 - 2⁸ = 24709 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 (24967) 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, 2492 + ... + 2501.

It is an arithmetic number, because the mean of its divisors is an integer number (7491).

2²⁴⁹⁶⁵ is an apocalyptic number.

It is an amenable number.

24965 is a deficient number, since it is larger than the sum of its proper divisors (4999).

24965 is an equidigital number, since it uses as much as digits as its factorization.

24965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4998.

The product of its digits is 2160, while the sum is 26.

The square root of 24965 is about 158.0031645253. The cubic root of 24965 is about 29.2265255932.

It can be divided in two parts, 24 and 965, that added together give a palindrome (989).

The spelling of 24965 in words is "twenty-four thousand, nine hundred sixty-five".