25297 has 4 divisors (see below), whose sum is σ = 25956. Its totient is φ = 24640.

The previous prime is 25261. The next prime is 25301. The reversal of 25297 is 79252.

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 961 + 24336 = 31^2 + 156^2 .

It is a cyclic number.

It is not a de Polignac number, because 25297 - 2⁷ = 25169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 268 + ... + 349.

It is an arithmetic number, because the mean of its divisors is an integer number (6489).

2²⁵²⁹⁷ is an apocalyptic number.

It is an amenable number.

25297 is a deficient number, since it is larger than the sum of its proper divisors (659).

25297 is an equidigital number, since it uses as much as digits as its factorization.

25297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 658.

The product of its digits is 1260, while the sum is 25.

The square root of 25297 is about 159.0503065071. The cubic root of 25297 is about 29.3555129544.

The spelling of 25297 in words is "twenty-five thousand, two hundred ninety-seven".