25593934897 has 2 divisors, whose sum is σ = 25593934898. Its totient is φ = 25593934896.

The previous prime is 25593934879. The next prime is 25593934909. The reversal of 25593934897 is 79843939552.

Together with previous prime (25593934879) 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., 25190768656 + 403166241 = 158716^2 + 20079^2 .

It is a cyclic number.

It is not a de Polignac number, because 25593934897 - 2¹¹ = 25593932849 is a prime.

It is not a weakly prime, because it can be changed into another prime (25593934837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12796967448 + 12796967449.

It is an arithmetic number, because the mean of its divisors is an integer number (12796967449).

Almost surely, 2^25593934897 is an apocalyptic number.

It is an amenable number.

25593934897 is a deficient number, since it is larger than the sum of its proper divisors (1).

25593934897 is an equidigital number, since it uses as much as digits as its factorization.

25593934897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 73483200, while the sum is 64.

The spelling of 25593934897 in words is "twenty-five billion, five hundred ninety-three million, nine hundred thirty-four thousand, eight hundred ninety-seven".