255013135105 has 4 divisors (see below), whose sum is σ = 306015762132. Its totient is φ = 204010508080.

The previous prime is 255013135079. The next prime is 255013135109. The reversal of 255013135105 is 501531310552.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 139486563441 + 115526571664 = 373479^2 + 339892^2 .

It is not a de Polignac number, because 255013135105 - 2⁷ = 255013134977 is a prime.

It is a super-2 number, since 2×255013135105² (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (255013135109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25501313506 + ... + 25501313515.

It is an arithmetic number, because the mean of its divisors is an integer number (76503940533).

Almost surely, 2^255013135105 is an apocalyptic number.

It is an amenable number.

255013135105 is a deficient number, since it is larger than the sum of its proper divisors (51002627027).

255013135105 is an equidigital number, since it uses as much as digits as its factorization.

255013135105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51002627026.

The product of its (nonzero) digits is 11250, while the sum is 31.

Adding to 255013135105 its reverse (501531310552), we get a palindrome (756544445657).

The spelling of 255013135105 in words is "two hundred fifty-five billion, thirteen million, one hundred thirty-five thousand, one hundred five".