25724056 has 16 divisors (see below), whose sum is σ = 49409640. Its totient is φ = 12548160.

The previous prime is 25724029. The next prime is 25724057. The reversal of 25724056 is 65042752.

It is a super-2 number, since 2×25724056² = 1323454114182272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25724057) 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, 38886 + ... + 39541.

Almost surely, 2^25724056 is an apocalyptic number.

It is an amenable number.

25724056 is a deficient number, since it is larger than the sum of its proper divisors (23685584).

25724056 is a wasteful number, since it uses less digits than its factorization.

25724056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78474 (or 78470 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 31.

The square root of 25724056 is about 5071.8888000428. Note that the first 4 decimals coincide. The cubic root of 25724056 is about 295.1978219251.

The spelling of 25724056 in words is "twenty-five million, seven hundred twenty-four thousand, fifty-six".