11203305125 has 8 divisors (see below), whose sum is σ = 13981724952. Its totient is φ = 8962644000.

The previous prime is 11203305121. The next prime is 11203305151. The reversal of 11203305125 is 52150330211.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 776161 + 11202528964 = 881^2 + 105842^2 .

It is not a de Polignac number, because 11203305125 - 2² = 11203305121 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 11203305125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11203305121) 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 7 ways as a sum of consecutive naturals, for example, 44813096 + ... + 44813345.

It is an arithmetic number, because the mean of its divisors is an integer number (1747715619).

Almost surely, 2^11203305125 is an apocalyptic number.

It is an amenable number.

11203305125 is a deficient number, since it is larger than the sum of its proper divisors (2778419827).

11203305125 is an frugal number, since it uses more digits than its factorization.

11203305125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89626456 (or 89626446 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 23.

Adding to 11203305125 its reverse (52150330211), we get a palindrome (63353635336).

The spelling of 11203305125 in words is "eleven billion, two hundred three million, three hundred five thousand, one hundred twenty-five".