25813441 has 2 divisors, whose sum is σ = 25813442. Its totient is φ = 25813440.

The previous prime is 25813433. The next prime is 25813453. The reversal of 25813441 is 14431852.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21893041 + 3920400 = 4679^2 + 1980^2 .

It is a cyclic number.

It is not a de Polignac number, because 25813441 - 2³ = 25813433 is a prime.

It is a Chen prime.

It is equal to p_1613584 and since 25813441 and 1613584 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (25810441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12906720 + 12906721.

It is an arithmetic number, because the mean of its divisors is an integer number (12906721).

Almost surely, 2^25813441 is an apocalyptic number.

It is an amenable number.

25813441 is a deficient number, since it is larger than the sum of its proper divisors (1).

25813441 is an equidigital number, since it uses as much as digits as its factorization.

25813441 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3840, while the sum is 28.

The square root of 25813441 is about 5080.6929645473. The cubic root of 25813441 is about 295.5393408284.

The spelling of 25813441 in words is "twenty-five million, eight hundred thirteen thousand, four hundred forty-one".