25816673 has 2 divisors, whose sum is σ = 25816674. Its totient is φ = 25816672.

The previous prime is 25816657. The next prime is 25816709. The reversal of 25816673 is 37661852.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21687649 + 4129024 = 4657^2 + 2032^2 .

It is a cyclic number.

It is not a de Polignac number, because 25816673 - 2⁴ = 25816657 is a prime.

It is not a weakly prime, because it can be changed into another prime (25816613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12908336 + 12908337.

It is an arithmetic number, because the mean of its divisors is an integer number (12908337).

Almost surely, 2^25816673 is an apocalyptic number.

It is an amenable number.

25816673 is a deficient number, since it is larger than the sum of its proper divisors (1).

25816673 is an equidigital number, since it uses as much as digits as its factorization.

25816673 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 38.

The square root of 25816673 is about 5081.0110214405. The cubic root of 25816673 is about 295.5516747553.

The spelling of 25816673 in words is "twenty-five million, eight hundred sixteen thousand, six hundred seventy-three".