25682791 has 2 divisors, whose sum is σ = 25682792. Its totient is φ = 25682790.

The previous prime is 25682779. The next prime is 25682809. The reversal of 25682791 is 19728652.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25682791 - 2¹⁹ = 25158503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25682711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12841395 + 12841396.

It is an arithmetic number, because the mean of its divisors is an integer number (12841396).

Almost surely, 2^25682791 is an apocalyptic number.

25682791 is a deficient number, since it is larger than the sum of its proper divisors (1).

25682791 is an equidigital number, since it uses as much as digits as its factorization.

25682791 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 40.

The square root of 25682791 is about 5067.8191562052. The cubic root of 25682791 is about 295.0398911869.

The spelling of 25682791 in words is "twenty-five million, six hundred eighty-two thousand, seven hundred ninety-one".