11015540225 has 12 divisors (see below), whose sum is σ = 14378179440. Its totient is φ = 8348619600.

The previous prime is 11015540219. The next prime is 11015540227. The reversal of 11015540225 is 52204551011.

It is not a de Polignac number, because 11015540225 - 2¹⁶ = 11015474689 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11015540194 and 11015540203.

It is not an unprimeable number, because it can be changed into a prime (11015540227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11594831 + ... + 11595780.

It is an arithmetic number, because the mean of its divisors is an integer number (1198181620).

Almost surely, 2^11015540225 is an apocalyptic number.

It is an amenable number.

11015540225 is a deficient number, since it is larger than the sum of its proper divisors (3362639215).

11015540225 is a wasteful number, since it uses less digits than its factorization.

11015540225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23190640 (or 23190635 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 26.

The spelling of 11015540225 in words is "eleven billion, fifteen million, five hundred forty thousand, two hundred twenty-five".