25872816 has 40 divisors (see below), whose sum is σ = 67694080. Its totient is φ = 8513856.

The previous prime is 25872773. The next prime is 25872823. The reversal of 25872816 is 61827852.

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 7 ways as a sum of consecutive naturals, for example, 381 + ... + 7203.

It is an arithmetic number, because the mean of its divisors is an integer number (1692352).

Almost surely, 2^25872816 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25872816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33847040).

25872816 is an abundant number, since it is smaller than the sum of its proper divisors (41821264).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25872816 is a wasteful number, since it uses less digits than its factorization.

25872816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6913 (or 6907 counting only the distinct ones).

The product of its digits is 53760, while the sum is 39.

The square root of 25872816 is about 5086.5328073256. The cubic root of 25872816 is about 295.7657630684.

The spelling of 25872816 in words is "twenty-five million, eight hundred seventy-two thousand, eight hundred sixteen".