25966849 has 2 divisors, whose sum is σ = 25966850. Its totient is φ = 25966848.

The previous prime is 25966841. The next prime is 25966879. The reversal of 25966849 is 94866952.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17305600 + 8661249 = 4160^2 + 2943^2 .

It is a cyclic number.

It is not a de Polignac number, because 25966849 - 2³ = 25966841 is a prime.

It is not a weakly prime, because it can be changed into another prime (25966841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12983424 + 12983425.

It is an arithmetic number, because the mean of its divisors is an integer number (12983425).

Almost surely, 2^25966849 is an apocalyptic number.

It is an amenable number.

25966849 is a deficient number, since it is larger than the sum of its proper divisors (1).

25966849 is an equidigital number, since it uses as much as digits as its factorization.

25966849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 933120, while the sum is 49.

The square root of 25966849 is about 5095.7677537345. The cubic root of 25966849 is about 296.1236434085.

The spelling of 25966849 in words is "twenty-five million, nine hundred sixty-six thousand, eight hundred forty-nine".