25916728 has 8 divisors (see below), whose sum is σ = 48593880. Its totient is φ = 12958360.

The previous prime is 25916717. The next prime is 25916731. The reversal of 25916728 is 82761952.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1619788 + ... + 1619803.

It is an arithmetic number, because the mean of its divisors is an integer number (6074235).

Almost surely, 2^25916728 is an apocalyptic number.

It is an amenable number.

25916728 is a deficient number, since it is larger than the sum of its proper divisors (22677152).

25916728 is a wasteful number, since it uses less digits than its factorization.

25916728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3239597 (or 3239593 counting only the distinct ones).

The product of its digits is 60480, while the sum is 40.

The square root of 25916728 is about 5090.8474736531. The cubic root of 25916728 is about 295.9329955470.

The spelling of 25916728 in words is "twenty-five million, nine hundred sixteen thousand, seven hundred twenty-eight".