25286717 has 2 divisors, whose sum is σ = 25286718. Its totient is φ = 25286716.

The previous prime is 25286711. The next prime is 25286719. The reversal of 25286717 is 71768252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23872996 + 1413721 = 4886^2 + 1189^2 .

It is a cyclic number.

It is not a de Polignac number, because 25286717 - 2¹⁶ = 25221181 is a prime.

Together with 25286719, it forms a pair of twin primes.

It is a Chen prime.

It is a pancake number, because a pancake can be divided into 25286717 parts by 7111 straight cuts.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25286711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12643358 + 12643359.

It is an arithmetic number, because the mean of its divisors is an integer number (12643359).

Almost surely, 2^25286717 is an apocalyptic number.

It is an amenable number.

25286717 is a deficient number, since it is larger than the sum of its proper divisors (1).

25286717 is an equidigital number, since it uses as much as digits as its factorization.

25286717 is an evil number, because the sum of its binary digits is even.

The product of its digits is 47040, while the sum is 38.

The square root of 25286717 is about 5028.5899614107. The cubic root of 25286717 is about 293.5153483243.

The spelling of 25286717 in words is "twenty-five million, two hundred eighty-six thousand, seven hundred seventeen".