25887680 has 168 divisors, whose sum is σ = 77833728. Its totient is φ = 8128512.

The previous prime is 25887649. The next prime is 25887703. The reversal of 25887680 is 8678852.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 203777 + ... + 203903.

It is an arithmetic number, because the mean of its divisors is an integer number (463296).

Almost surely, 2^25887680 is an apocalyptic number.

25887680 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 25887680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38916864).

25887680 is an abundant number, since it is smaller than the sum of its proper divisors (51946048).

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

25887680 is a wasteful number, since it uses less digits than its factorization.

25887680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171 (or 154 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 44.

The square root of 25887680 is about 5087.9937106879. The cubic root of 25887680 is about 295.8223916251.

The spelling of 25887680 in words is "twenty-five million, eight hundred eighty-seven thousand, six hundred eighty".