25694791 has 2 divisors, whose sum is σ = 25694792. Its totient is φ = 25694790.

The previous prime is 25694789. The next prime is 25694819. The reversal of 25694791 is 19749652.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25694791 - 2¹ = 25694789 is a prime.

Together with 25694789, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25694491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12847395 + 12847396.

It is an arithmetic number, because the mean of its divisors is an integer number (12847396).

Almost surely, 2^25694791 is an apocalyptic number.

25694791 is a deficient number, since it is larger than the sum of its proper divisors (1).

25694791 is an equidigital number, since it uses as much as digits as its factorization.

25694791 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 136080, while the sum is 43.

The square root of 25694791 is about 5069.0029591627. The cubic root of 25694791 is about 295.0858354072.

The spelling of 25694791 in words is "twenty-five million, six hundred ninety-four thousand, seven hundred ninety-one".