25163041805 has 16 divisors (see below), whose sum is σ = 33248574144. Its totient is φ = 18129358080.

The previous prime is 25163041801. The next prime is 25163041853. The reversal of 25163041805 is 50814036152.

It is not a de Polignac number, because 25163041805 - 2² = 25163041801 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25163041801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2132012 + ... + 2143781.

It is an arithmetic number, because the mean of its divisors is an integer number (2078035884).

Almost surely, 2^25163041805 is an apocalyptic number.

It is an amenable number.

25163041805 is a deficient number, since it is larger than the sum of its proper divisors (8085532339).

25163041805 is a wasteful number, since it uses less digits than its factorization.

25163041805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4275916.

The product of its (nonzero) digits is 28800, while the sum is 35.

Adding to 25163041805 its reverse (50814036152), we get a palindrome (75977077957).

The spelling of 25163041805 in words is "twenty-five billion, one hundred sixty-three million, forty-one thousand, eight hundred five".