25980281 has 2 divisors, whose sum is σ = 25980282. Its totient is φ = 25980280.

The previous prime is 25980247. The next prime is 25980287. The reversal of 25980281 is 18208952.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25847056 + 133225 = 5084^2 + 365^2 .

It is a cyclic number.

It is not a de Polignac number, because 25980281 - 2²² = 21785977 is a prime.

It is a super-2 number, since 2×25980281² = 1349950001677922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25980287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12990140 + 12990141.

It is an arithmetic number, because the mean of its divisors is an integer number (12990141).

Almost surely, 2^25980281 is an apocalyptic number.

It is an amenable number.

25980281 is a deficient number, since it is larger than the sum of its proper divisors (1).

25980281 is an equidigital number, since it uses as much as digits as its factorization.

25980281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11520, while the sum is 35.

The square root of 25980281 is about 5097.0855397962. The cubic root of 25980281 is about 296.1746937195.

The spelling of 25980281 in words is "twenty-five million, nine hundred eighty thousand, two hundred eighty-one".