25889280 has 80 divisors (see below), whose sum is σ = 82789344. Its totient is φ = 6901760.

The previous prime is 25889273. The next prime is 25889321. The reversal of 25889280 is 8298852.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5995 + ... + 9365.

Almost surely, 2^25889280 is an apocalyptic number.

25889280 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 25889280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41394672).

25889280 is an abundant number, since it is smaller than the sum of its proper divisors (56900064).

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

25889280 is an equidigital number, since it uses as much as digits as its factorization.

25889280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3397 (or 3381 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 42.

The square root of 25889280 is about 5088.1509411573. The cubic root of 25889280 is about 295.8284859793.

The spelling of 25889280 in words is "twenty-five million, eight hundred eighty-nine thousand, two hundred eighty".