25886720 has 68 divisors (see below), whose sum is σ = 62914080. Its totient is φ = 10223616.

The previous prime is 25886719. The next prime is 25886741. The reversal of 25886720 is 2768852.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 327641 + ... + 327719.

Almost surely, 2^25886720 is an apocalyptic number.

25886720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25886720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31457040).

25886720 is an abundant number, since it is smaller than the sum of its proper divisors (37027360).

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

25886720 is an frugal number, since it uses more digits than its factorization.

25886720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116 (or 86 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 38.

The square root of 25886720 is about 5087.8993700741. The cubic root of 25886720 is about 295.8187348920.

The spelling of 25886720 in words is "twenty-five million, eight hundred eighty-six thousand, seven hundred twenty".