25768289 has 2 divisors, whose sum is σ = 25768290. Its totient is φ = 25768288.

The previous prime is 25768283. The next prime is 25768297. The reversal of 25768289 is 98286752.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18835600 + 6932689 = 4340^2 + 2633^2 .

It is a cyclic number.

It is not a de Polignac number, because 25768289 - 2⁴ = 25768273 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25768283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12884144 + 12884145.

It is an arithmetic number, because the mean of its divisors is an integer number (12884145).

Almost surely, 2^25768289 is an apocalyptic number.

It is an amenable number.

25768289 is a deficient number, since it is larger than the sum of its proper divisors (1).

25768289 is an equidigital number, since it uses as much as digits as its factorization.

25768289 is an evil number, because the sum of its binary digits is even.

The product of its digits is 483840, while the sum is 47.

The square root of 25768289 is about 5076.2475313956. The cubic root of 25768289 is about 295.3669244466.

The spelling of 25768289 in words is "twenty-five million, seven hundred sixty-eight thousand, two hundred eighty-nine".