25688567 has 2 divisors, whose sum is σ = 25688568. Its totient is φ = 25688566.

The previous prime is 25688563. The next prime is 25688569. The reversal of 25688567 is 76588652.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25688567 - 2² = 25688563 is a prime.

Together with 25688569, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25688561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12844283 + 12844284.

It is an arithmetic number, because the mean of its divisors is an integer number (12844284).

Almost surely, 2^25688567 is an apocalyptic number.

25688567 is a deficient number, since it is larger than the sum of its proper divisors (1).

25688567 is an equidigital number, since it uses as much as digits as its factorization.

25688567 is an evil number, because the sum of its binary digits is even.

The product of its digits is 806400, while the sum is 47.

The square root of 25688567 is about 5068.3889945425. The cubic root of 25688567 is about 295.0620074576.

The spelling of 25688567 in words is "twenty-five million, six hundred eighty-eight thousand, five hundred sixty-seven".