25724543071289 has 2 divisors, whose sum is σ = 25724543071290. Its totient is φ = 25724543071288.

The previous prime is 25724543071273. The next prime is 25724543071363. The reversal of 25724543071289 is 98217034542752.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18963934657600 + 6760608413689 = 4354760^2 + 2600117^2 .

It is a cyclic number.

It is not a de Polignac number, because 25724543071289 - 2⁴ = 25724543071273 is a prime.

It is a super-2 number, since 2×25724543071289² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25724543011289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12862271535644 + 12862271535645.

It is an arithmetic number, because the mean of its divisors is an integer number (12862271535645).

Almost surely, 2^{25724543071289} is an apocalyptic number.

It is an amenable number.

25724543071289 is a deficient number, since it is larger than the sum of its proper divisors (1).

25724543071289 is an equidigital number, since it uses as much as digits as its factorization.

25724543071289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 33868800, while the sum is 59.

The spelling of 25724543071289 in words is "twenty-five trillion, seven hundred twenty-four billion, five hundred forty-three million, seventy-one thousand, two hundred eighty-nine".