25798331853 has 48 divisors (see below), whose sum is σ = 43478038656. Its totient is φ = 14435867520.

The previous prime is 25798331849. The next prime is 25798331863. The reversal of 25798331853 is 35813389752.

25798331853 is a `hidden beast` number, since 2 + 579 + 8 + 3 + 3 + 18 + 53 = 666.

It is not a de Polignac number, because 25798331853 - 2² = 25798331849 is a prime.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 25798331853.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25798331863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 857575 + ... + 887147.

It is an arithmetic number, because the mean of its divisors is an integer number (905792472).

Almost surely, 2^25798331853 is an apocalyptic number.

It is an amenable number.

25798331853 is a deficient number, since it is larger than the sum of its proper divisors (17679706803).

25798331853 is a wasteful number, since it uses less digits than its factorization.

25798331853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29874 (or 29871 counting only the distinct ones).

The product of its digits is 5443200, while the sum is 54.

The spelling of 25798331853 in words is "twenty-five billion, seven hundred ninety-eight million, three hundred thirty-one thousand, eight hundred fifty-three".