25696993097 has 2 divisors, whose sum is σ = 25696993098. Its totient is φ = 25696993096.

The previous prime is 25696993073. The next prime is 25696993111. The reversal of 25696993097 is 79039969652.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25545309241 + 151683856 = 159829^2 + 12316^2 .

It is a cyclic number.

It is not a de Polignac number, because 25696993097 - 2²⁴ = 25680215881 is a prime.

It is not a weakly prime, because it can be changed into another prime (25696993057) 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, 12848496548 + 12848496549.

It is an arithmetic number, because the mean of its divisors is an integer number (12848496549).

Almost surely, 2^25696993097 is an apocalyptic number.

It is an amenable number.

25696993097 is a deficient number, since it is larger than the sum of its proper divisors (1).

25696993097 is an equidigital number, since it uses as much as digits as its factorization.

25696993097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 49601160, while the sum is 65.

The spelling of 25696993097 in words is "twenty-five billion, six hundred ninety-six million, nine hundred ninety-three thousand, ninety-seven".