25244913120197 has 2 divisors, whose sum is σ = 25244913120198. Its totient is φ = 25244913120196.

The previous prime is 25244913120179. The next prime is 25244913120209. The reversal of 25244913120197 is 79102131944252.

Together with previous prime (25244913120179) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15428979744676 + 9815933375521 = 3927974^2 + 3133039^2 .

It is a cyclic number.

It is not a de Polignac number, because 25244913120197 - 2¹⁶ = 25244913054661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25244913120107) 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, 12622456560098 + 12622456560099.

It is an arithmetic number, because the mean of its divisors is an integer number (12622456560099).

Almost surely, 2^{25244913120197} is an apocalyptic number.

It is an amenable number.

25244913120197 is a deficient number, since it is larger than the sum of its proper divisors (1).

25244913120197 is an equidigital number, since it uses as much as digits as its factorization.

25244913120197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1088640, while the sum is 50.

The spelling of 25244913120197 in words is "twenty-five trillion, two hundred forty-four billion, nine hundred thirteen million, one hundred twenty thousand, one hundred ninety-seven".