25791728 has 20 divisors (see below), whose sum is σ = 50335320. Its totient is φ = 12801984.

The previous prime is 25791719. The next prime is 25791743. The reversal of 25791728 is 82719752.

It is a congruent number.

It is an unprimeable number.

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, 3575 + ... + 8022.

It is an arithmetic number, because the mean of its divisors is an integer number (2516766).

Almost surely, 2^25791728 is an apocalyptic number.

It is an amenable number.

25791728 is a deficient number, since it is larger than the sum of its proper divisors (24543592).

25791728 is a wasteful number, since it uses less digits than its factorization.

25791728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11744 (or 11738 counting only the distinct ones).

The product of its digits is 70560, while the sum is 41.

The square root of 25791728 is about 5078.5557001967. Note that the first 3 decimals coincide. The cubic root of 25791728 is about 295.4564531862.

The spelling of 25791728 in words is "twenty-five million, seven hundred ninety-one thousand, seven hundred twenty-eight".