25871728 has 10 divisors (see below), whose sum is σ = 50126504. Its totient is φ = 12935856.

The previous prime is 25871693. The next prime is 25871737. The reversal of 25871728 is 82717852.

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 as a sum of consecutive naturals, namely, 808476 + ... + 808507.

Almost surely, 2^25871728 is an apocalyptic number.

It is an amenable number.

25871728 is a deficient number, since it is larger than the sum of its proper divisors (24254776).

25871728 is a wasteful number, since it uses less digits than its factorization.

25871728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1616991 (or 1616985 counting only the distinct ones).

The product of its digits is 62720, while the sum is 40.

The square root of 25871728 is about 5086.4258571221. The cubic root of 25871728 is about 295.7616171770.

The spelling of 25871728 in words is "twenty-five million, eight hundred seventy-one thousand, seven hundred twenty-eight".