25723636 has 12 divisors (see below), whose sum is σ = 45067680. Its totient is φ = 12847160.

The previous prime is 25723631. The next prime is 25723661. The reversal of 25723636 is 63632752.

25723636 is a modest number, since divided by 3636 gives 2572 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25723631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 921 + ... + 7231.

It is an arithmetic number, because the mean of its divisors is an integer number (3755640).

Almost surely, 2^25723636 is an apocalyptic number.

It is an amenable number.

25723636 is a deficient number, since it is larger than the sum of its proper divisors (19344044).

25723636 is a wasteful number, since it uses less digits than its factorization.

25723636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7334 (or 7332 counting only the distinct ones).

The product of its digits is 45360, while the sum is 34.

The square root of 25723636 is about 5071.8473951806. The cubic root of 25723636 is about 295.1962153387.

The spelling of 25723636 in words is "twenty-five million, seven hundred twenty-three thousand, six hundred thirty-six".