25664536 has 16 divisors (see below), whose sum is σ = 49780800. Its totient is φ = 12389664.

The previous prime is 25664531. The next prime is 25664557. The reversal of 25664536 is 63546652.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 25664495 and 25664504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25664531) 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 3 ways as a sum of consecutive naturals, for example, 55080 + ... + 55543.

It is an arithmetic number, because the mean of its divisors is an integer number (3111300).

Almost surely, 2^25664536 is an apocalyptic number.

It is an amenable number.

25664536 is a deficient number, since it is larger than the sum of its proper divisors (24116264).

25664536 is a wasteful number, since it uses less digits than its factorization.

25664536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110658 (or 110654 counting only the distinct ones).

The product of its digits is 129600, while the sum is 37.

The square root of 25664536 is about 5066.0177654643. The cubic root of 25664536 is about 294.9699710887.

The spelling of 25664536 in words is "twenty-five million, six hundred sixty-four thousand, five hundred thirty-six".