11533425205 has 4 divisors (see below), whose sum is σ = 13840110252. Its totient is φ = 9226740160.

The previous prime is 11533425191. The next prime is 11533425217. The reversal of 11533425205 is 50252433511.

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 4316752804 + 7216672401 = 65702^2 + 84951^2 .

It is not a de Polignac number, because 11533425205 - 2¹⁹ = 11532900917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1153342516 + ... + 1153342525.

It is an arithmetic number, because the mean of its divisors is an integer number (3460027563).

Almost surely, 2^11533425205 is an apocalyptic number.

It is an amenable number.

11533425205 is a deficient number, since it is larger than the sum of its proper divisors (2306685047).

11533425205 is an equidigital number, since it uses as much as digits as its factorization.

11533425205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2306685046.

The product of its (nonzero) digits is 18000, while the sum is 31.

Adding to 11533425205 its reverse (50252433511), we get a palindrome (61785858716).

It can be divided in two parts, 11 and 533425205, that added together give a square (533425216 = 23096²).

The spelling of 11533425205 in words is "eleven billion, five hundred thirty-three million, four hundred twenty-five thousand, two hundred five".