25782298500 has 192 divisors, whose sum is σ = 89534914560. Its totient is φ = 5636822400.

The previous prime is 25782298489. The next prime is 25782298517. The reversal of 25782298500 is 589228752.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 25782298500.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 188121 + ... + 294879.

It is an arithmetic number, because the mean of its divisors is an integer number (466327680).

Almost surely, 2^25782298500 is an apocalyptic number.

25782298500 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 25782298500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44767457280).

25782298500 is an abundant number, since it is smaller than the sum of its proper divisors (63752616060).

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

25782298500 is a wasteful number, since it uses less digits than its factorization.

25782298500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106811 (or 106799 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 48.

The spelling of 25782298500 in words is "twenty-five billion, seven hundred eighty-two million, two hundred ninety-eight thousand, five hundred".