25980336662281 has 27 divisors (see below), whose sum is σ = 26861657190069. Its totient is φ = 25127598435072.

The previous prime is 25980336662249. The next prime is 25980336662297. The reversal of 25980336662281 is 18226663308952.

The square root of 25980336662281 is 5097091.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 804187465225 + 25176149197056 = 896765^2 + 5017584^2 .

It is not a de Polignac number, because 25980336662281 - 2⁵ = 25980336662249 is a prime.

It is a super-2 number, since 2×25980336662281² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25980336662681) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 24766764645 + ... + 24766765693.

Almost surely, 2^{25980336662281} is an apocalyptic number.

25980336662281 is the 5097091-st square number.

25980336662281 is the 2548546-th centered octagonal number.

It is an amenable number.

25980336662281 is a deficient number, since it is larger than the sum of its proper divisors (881320527788).

25980336662281 is an frugal number, since it uses more digits than its factorization.

25980336662281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2410 (or 1205 counting only the distinct ones).

The product of its (nonzero) digits is 44789760, while the sum is 61.

The spelling of 25980336662281 in words is "twenty-five trillion, nine hundred eighty billion, three hundred thirty-six million, six hundred sixty-two thousand, two hundred eighty-one".