25793971782 has 16 divisors (see below), whose sum is σ = 53830897920. Its totient is φ = 8224164872.

The previous prime is 25793971771. The next prime is 25793971831. The reversal of 25793971782 is 28717939752.

It is a super-2 number, since 2×25793971782² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93456282 + ... + 93456557.

It is an arithmetic number, because the mean of its divisors is an integer number (3364431120).

Almost surely, 2^25793971782 is an apocalyptic number.

25793971782 is an abundant number, since it is smaller than the sum of its proper divisors (28036926138).

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

25793971782 is a wasteful number, since it uses less digits than its factorization.

25793971782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186912867.

The product of its digits is 13335840, while the sum is 60.

The spelling of 25793971782 in words is "twenty-five billion, seven hundred ninety-three million, nine hundred seventy-one thousand, seven hundred eighty-two".