25563964 has 24 divisors (see below), whose sum is σ = 47779200. Its totient is φ = 11941440.

The previous prime is 25563961. The next prime is 25563991. The reversal of 25563964 is 46936552.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25563961) 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 in 7 ways as a sum of consecutive naturals, for example, 42 + ... + 7150.

It is an arithmetic number, because the mean of its divisors is an integer number (1990800).

Almost surely, 2^25563964 is an apocalyptic number.

It is an amenable number.

25563964 is a deficient number, since it is larger than the sum of its proper divisors (22215236).

25563964 is a wasteful number, since it uses less digits than its factorization.

25563964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7173 (or 7171 counting only the distinct ones).

The product of its digits is 194400, while the sum is 40.

The square root of 25563964 is about 5056.0818822483. The cubic root of 25563964 is about 294.5841656201.

The spelling of 25563964 in words is "twenty-five million, five hundred sixty-three thousand, nine hundred sixty-four".