25027116394109 has 2 divisors, whose sum is σ = 25027116394110. Its totient is φ = 25027116394108.

The previous prime is 25027116394103. The next prime is 25027116394123. The reversal of 25027116394109 is 90149361172052.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18107833408900 + 6919282985209 = 4255330^2 + 2630453^2 .

It is a cyclic number.

It is not a de Polignac number, because 25027116394109 - 2⁴⁰ = 23927604766333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25027116394103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12513558197054 + 12513558197055.

It is an arithmetic number, because the mean of its divisors is an integer number (12513558197055).

Almost surely, 2^{25027116394109} is an apocalyptic number.

It is an amenable number.

25027116394109 is a deficient number, since it is larger than the sum of its proper divisors (1).

25027116394109 is an equidigital number, since it uses as much as digits as its factorization.

25027116394109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 816480, while the sum is 50.

The spelling of 25027116394109 in words is "twenty-five trillion, twenty-seven billion, one hundred sixteen million, three hundred ninety-four thousand, one hundred nine".