11205234253 has 4 divisors (see below), whose sum is σ = 11508078460. Its totient is φ = 10902390048.

The previous prime is 11205234149. The next prime is 11205234289. The reversal of 11205234253 is 35243250211.

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 9428021604 + 1777212649 = 97098^2 + 42157^2 .

It is a cyclic number.

It is not a de Polignac number, because 11205234253 - 2¹⁷ = 11205103181 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 (11205834253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 151422048 + ... + 151422121.

It is an arithmetic number, because the mean of its divisors is an integer number (2877019615).

Almost surely, 2^11205234253 is an apocalyptic number.

It is an amenable number.

11205234253 is a deficient number, since it is larger than the sum of its proper divisors (302844207).

11205234253 is an equidigital number, since it uses as much as digits as its factorization.

11205234253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302844206.

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 11205234253 its reverse (35243250211), we get a palindrome (46448484464).

The spelling of 11205234253 in words is "eleven billion, two hundred five million, two hundred thirty-four thousand, two hundred fifty-three".