25699906653089 has 2 divisors, whose sum is σ = 25699906653090. Its totient is φ = 25699906653088.

The previous prime is 25699906653061. The next prime is 25699906653133. The reversal of 25699906653089 is 98035660999652.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22885507854400 + 2814398798689 = 4783880^2 + 1677617^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25699906653089 is a prime.

It is not a weakly prime, because it can be changed into another prime (25699906653049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12849953326544 + 12849953326545.

It is an arithmetic number, because the mean of its divisors is an integer number (12849953326545).

Almost surely, 2^{25699906653089} is an apocalyptic number.

It is an amenable number.

25699906653089 is a deficient number, since it is larger than the sum of its proper divisors (1).

25699906653089 is an equidigital number, since it uses as much as digits as its factorization.

25699906653089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1700611200, while the sum is 77.

The spelling of 25699906653089 in words is "twenty-five trillion, six hundred ninety-nine billion, nine hundred six million, six hundred fifty-three thousand, eighty-nine".