25953851798 has 16 divisors (see below), whose sum is σ = 45694813344. Its totient is φ = 10822455360.

The previous prime is 25953851767. The next prime is 25953851821. The reversal of 25953851798 is 89715835952.

It is a self number, because there is not a number n which added to its sum of digits gives 25953851798.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 25051463 + ... + 25052498.

It is an arithmetic number, because the mean of its divisors is an integer number (2855925834).

Almost surely, 2^25953851798 is an apocalyptic number.

25953851798 is a deficient number, since it is larger than the sum of its proper divisors (19740961546).

25953851798 is a wasteful number, since it uses less digits than its factorization.

25953851798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50104007.

The product of its digits is 27216000, while the sum is 62.

The spelling of 25953851798 in words is "twenty-five billion, nine hundred fifty-three million, eight hundred fifty-one thousand, seven hundred ninety-eight".