25996080289 has 3 divisors (see below), whose sum is σ = 25996241523. Its totient is φ = 25995919056.

The previous prime is 25996080259. The next prime is 25996080323. The reversal of 25996080289 is 98208069952.

It is a happy number.

The square root of 25996080289 is 161233.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 21343749025 + 4652331264 = 146095^2 + 68208^2 .

It is not a de Polignac number, because 25996080289 - 2⁹ = 25996079777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25996080259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 80617 + ... + 241849.

It is an arithmetic number, because the mean of its divisors is an integer number (8665413841).

Almost surely, 2^25996080289 is an apocalyptic number.

25996080289 is the 161233-rd square number.

25996080289 is the 80617-th centered octagonal number.

It is an amenable number.

25996080289 is a deficient number, since it is larger than the sum of its proper divisors (161234).

25996080289 is an frugal number, since it uses more digits than its factorization.

25996080289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322466 (or 161233 counting only the distinct ones).

The product of its (nonzero) digits is 5598720, while the sum is 58.

The spelling of 25996080289 in words is "twenty-five billion, nine hundred ninety-six million, eighty thousand, two hundred eighty-nine".