11531142530225 has 12 divisors (see below), whose sum is σ = 14470889230896. Its totient is φ = 9113770480080.

The previous prime is 11531142530207. The next prime is 11531142530291. The reversal of 11531142530225 is 52203524113511.

It is not a de Polignac number, because 11531142530225 - 2¹⁴ = 11531142513841 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2778586487 + ... + 2778590636.

It is an arithmetic number, because the mean of its divisors is an integer number (1205907435908).

Almost surely, 2^{11531142530225} is an apocalyptic number.

It is an amenable number.

11531142530225 is a deficient number, since it is larger than the sum of its proper divisors (2939746700671).

11531142530225 is an equidigital number, since it uses as much as digits as its factorization.

11531142530225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5557177216 (or 5557177211 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 35.

Adding to 11531142530225 its reverse (52203524113511), we get a palindrome (63734666643736).

The spelling of 11531142530225 in words is "eleven trillion, five hundred thirty-one billion, one hundred forty-two million, five hundred thirty thousand, two hundred twenty-five".