25260289 has 2 divisors, whose sum is σ = 25260290. Its totient is φ = 25260288.

The previous prime is 25260281. The next prime is 25260293. The reversal of 25260289 is 98206252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25170289 + 90000 = 5017^2 + 300^2 .

It is a cyclic number.

It is not a de Polignac number, because 25260289 - 2³ = 25260281 is a prime.

It is not a weakly prime, because it can be changed into another prime (25260281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12630144 + 12630145.

It is an arithmetic number, because the mean of its divisors is an integer number (12630145).

Almost surely, 2^25260289 is an apocalyptic number.

It is an amenable number.

25260289 is a deficient number, since it is larger than the sum of its proper divisors (1).

25260289 is an equidigital number, since it uses as much as digits as its factorization.

25260289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 25260289 is about 5025.9615000515. The cubic root of 25260289 is about 293.4130584202.

The spelling of 25260289 in words is "twenty-five million, two hundred sixty thousand, two hundred eighty-nine".