25802840 has 32 divisors (see below), whose sum is σ = 66350880. Its totient is φ = 8846592.

The previous prime is 25802831. The next prime is 25802851. The reversal of 25802840 is 4820852.

It is a congruent number.

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, 45797 + ... + 46356.

It is an arithmetic number, because the mean of its divisors is an integer number (2073465).

Almost surely, 2^25802840 is an apocalyptic number.

25802840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25802840 is an abundant number, since it is smaller than the sum of its proper divisors (40548040).

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

25802840 is a wasteful number, since it uses less digits than its factorization.

25802840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92171 (or 92167 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 29.

The square root of 25802840 is about 5079.6495942142. The cubic root of 25802840 is about 295.4988781674.

The spelling of 25802840 in words is "twenty-five million, eight hundred two thousand, eight hundred forty".