25782860 has 24 divisors (see below), whose sum is σ = 54645360. Its totient is φ = 10217664.

The previous prime is 25782853. The next prime is 25782877. The reversal of 25782860 is 6828752.

25782860 is nontrivially palindromic in base 12.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

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, 3734 + ... + 8093.

It is an arithmetic number, because the mean of its divisors is an integer number (2276890).

Almost surely, 2^25782860 is an apocalyptic number.

25782860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25782860 is an abundant number, since it is smaller than the sum of its proper divisors (28862500).

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

25782860 is a wasteful number, since it uses less digits than its factorization.

25782860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11945 (or 11943 counting only the distinct ones).

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

The square root of 25782860 is about 5077.6825422628. The cubic root of 25782860 is about 295.4225869252.

The spelling of 25782860 in words is "twenty-five million, seven hundred eighty-two thousand, eight hundred sixty".