25981360 has 40 divisors (see below), whose sum is σ = 63589680. Its totient is φ = 9844992.

The previous prime is 25981339. The next prime is 25981369. The reversal of 25981360 is 6318952.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (25981369) by changing a digit.

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, 7027 + ... + 10066.

It is an arithmetic number, because the mean of its divisors is an integer number (1589742).

Almost surely, 2^25981360 is an apocalyptic number.

25981360 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25981360 is an abundant number, since it is smaller than the sum of its proper divisors (37608320).

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

25981360 is a wasteful number, since it uses less digits than its factorization.

25981360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17125 (or 17119 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 25981360 is about 5097.1913834974. The cubic root of 25981360 is about 296.1787938557.

The spelling of 25981360 in words is "twenty-five million, nine hundred eighty-one thousand, three hundred sixty".