11154225205 has 4 divisors (see below), whose sum is σ = 13385070252. Its totient is φ = 8923380160.

The previous prime is 11154225119. The next prime is 11154225221. The reversal of 11154225205 is 50252245111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50252245111 = 193 ⋅260374327.

It can be written as a sum of positive squares in 2 ways, for example, as 4115350801 + 7038874404 = 64151^2 + 83898^2 .

It is not a de Polignac number, because 11154225205 - 2⁷ = 11154225077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1115422516 + ... + 1115422525.

It is an arithmetic number, because the mean of its divisors is an integer number (3346267563).

Almost surely, 2^11154225205 is an apocalyptic number.

It is an amenable number.

11154225205 is a deficient number, since it is larger than the sum of its proper divisors (2230845047).

11154225205 is an equidigital number, since it uses as much as digits as its factorization.

11154225205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2230845046.

The product of its (nonzero) digits is 4000, while the sum is 28.

The spelling of 11154225205 in words is "eleven billion, one hundred fifty-four million, two hundred twenty-five thousand, two hundred five".