25249 has 4 divisors (see below), whose sum is σ = 28864. Its totient is φ = 21636.

The previous prime is 25247. The next prime is 25253. The reversal of 25249 is 94252.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 25249 - 2¹ = 25247 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (25243) 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, 1797 + ... + 1810.

It is an arithmetic number, because the mean of its divisors is an integer number (7216).

2²⁵²⁴⁹ is an apocalyptic number.

It is an amenable number.

25249 is a deficient number, since it is larger than the sum of its proper divisors (3615).

25249 is an equidigital number, since it uses as much as digits as its factorization.

25249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3614.

The product of its digits is 720, while the sum is 22.

The square root of 25249 is about 158.8993392057. The cubic root of 25249 is about 29.3369342457.

The spelling of 25249 in words is "twenty-five thousand, two hundred forty-nine".