25747 has 2 divisors, whose sum is σ = 25748. Its totient is φ = 25746.

The previous prime is 25741. The next prime is 25759. The reversal of 25747 is 74752.

25747 is nontrivially palindromic in base 2.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25747 is a prime.

It is a nialpdrome in base 14.

It is not a weakly prime, because it can be changed into another prime (25741) 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 as a sum of consecutive naturals, namely, 12873 + 12874.

It is an arithmetic number, because the mean of its divisors is an integer number (12874).

2²⁵⁷⁴⁷ is an apocalyptic number.

25747 is a deficient number, since it is larger than the sum of its proper divisors (1).

25747 is an equidigital number, since it uses as much as digits as its factorization.

25747 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1960, while the sum is 25.

The square root of 25747 is about 160.4587174322. The cubic root of 25747 is about 29.5285560890.

The spelling of 25747 in words is "twenty-five thousand, seven hundred forty-seven".