25794820 has 24 divisors (see below), whose sum is σ = 54500544. Its totient is φ = 10254816.

The previous prime is 25794803. The next prime is 25794827. The reversal of 25794820 is 2849752.

It is a self number, because there is not a number n which added to its sum of digits gives 25794820.

It is not an unprimeable number, because it can be changed into a prime (25794827) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 522 + ... + 7201.

It is an arithmetic number, because the mean of its divisors is an integer number (2270856).

Almost surely, 2^25794820 is an apocalyptic number.

25794820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25794820 is an abundant number, since it is smaller than the sum of its proper divisors (28705724).

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

25794820 is a wasteful number, since it uses less digits than its factorization.

25794820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7899 (or 7897 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 25794820 is about 5078.8601083314. The cubic root of 25794820 is about 295.4682594889.

The spelling of 25794820 in words is "twenty-five million, seven hundred ninety-four thousand, eight hundred twenty".