25097297099761 has 2 divisors, whose sum is σ = 25097297099762. Its totient is φ = 25097297099760.

The previous prime is 25097297099737. The next prime is 25097297099807. The reversal of 25097297099761 is 16799079279052.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14035812673600 + 11061484426161 = 3746440^2 + 3325881^2 .

It is a cyclic number.

It is not a de Polignac number, because 25097297099761 - 2¹¹ = 25097297097713 is a prime.

It is not a weakly prime, because it can be changed into another prime (25097297099701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12548648549880 + 12548648549881.

It is an arithmetic number, because the mean of its divisors is an integer number (12548648549881).

Almost surely, 2^{25097297099761} is an apocalyptic number.

It is an amenable number.

25097297099761 is a deficient number, since it is larger than the sum of its proper divisors (1).

25097297099761 is an equidigital number, since it uses as much as digits as its factorization.

25097297099761 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 270050760, while the sum is 73.

The spelling of 25097297099761 in words is "twenty-five trillion, ninety-seven billion, two hundred ninety-seven million, ninety-nine thousand, seven hundred sixty-one".