25900289 has 2 divisors, whose sum is σ = 25900290. Its totient is φ = 25900288.

The previous prime is 25900279. The next prime is 25900307. The reversal of 25900289 is 98200952.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18105025 + 7795264 = 4255^2 + 2792^2 .

It is a cyclic number.

It is not a de Polignac number, because 25900289 - 2⁸ = 25900033 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (25900279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12950144 + 12950145.

It is an arithmetic number, because the mean of its divisors is an integer number (12950145).

Almost surely, 2^25900289 is an apocalyptic number.

It is an amenable number.

25900289 is a deficient number, since it is larger than the sum of its proper divisors (1).

25900289 is an equidigital number, since it uses as much as digits as its factorization.

25900289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 25900289 is about 5089.2326533575. The cubic root of 25900289 is about 295.8704121393.

The spelling of 25900289 in words is "twenty-five million, nine hundred thousand, two hundred eighty-nine".