25563345 has 16 divisors (see below), whose sum is σ = 41141952. Its totient is φ = 13553600.

The previous prime is 25563323. The next prime is 25563353. The reversal of 25563345 is 54336552.

It is not a de Polignac number, because 25563345 - 2⁷ = 25563217 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2331 + ... + 7520.

It is an arithmetic number, because the mean of its divisors is an integer number (2571372).

Almost surely, 2^25563345 is an apocalyptic number.

It is an amenable number.

25563345 is a deficient number, since it is larger than the sum of its proper divisors (15578607).

25563345 is a wasteful number, since it uses less digits than its factorization.

25563345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10032.

The product of its digits is 54000, while the sum is 33.

The square root of 25563345 is about 5056.0206684704. The cubic root of 25563345 is about 294.5817879363.

Adding to 25563345 its reverse (54336552), we get a palindrome (79899897).

The spelling of 25563345 in words is "twenty-five million, five hundred sixty-three thousand, three hundred forty-five".