25853489 has 2 divisors, whose sum is σ = 25853490. Its totient is φ = 25853488.

The previous prime is 25853479. The next prime is 25853501. The reversal of 25853489 is 98435852.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25806400 + 47089 = 5080^2 + 217^2 .

It is a cyclic number.

It is not a de Polignac number, because 25853489 - 2¹⁶ = 25787953 is a prime.

It is not a weakly prime, because it can be changed into another prime (25853479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12926744 + 12926745.

It is an arithmetic number, because the mean of its divisors is an integer number (12926745).

Almost surely, 2^25853489 is an apocalyptic number.

It is an amenable number.

25853489 is a deficient number, since it is larger than the sum of its proper divisors (1).

25853489 is an equidigital number, since it uses as much as digits as its factorization.

25853489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 345600, while the sum is 44.

The square root of 25853489 is about 5084.6326317641. The cubic root of 25853489 is about 295.6920990235.

The spelling of 25853489 in words is "twenty-five million, eight hundred fifty-three thousand, four hundred eighty-nine".