11515011021325 has 18 divisors (see below), whose sum is σ = 16609815899466. Its totient is φ = 7896007556640.

The previous prime is 11515011021307. The next prime is 11515011021379. The reversal of 11515011021325 is 52312011051511.

It can be written as a sum of positive squares in 3 ways, for example, as 849783454569 + 10665227566756 = 921837^2 + 3265766^2 .

It is not a de Polignac number, because 11515011021325 - 2¹¹ = 11515011019277 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11515011021293 and 11515011021302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 4700003274 + ... + 4700005723.

Almost surely, 2^{11515011021325} is an apocalyptic number.

It is an amenable number.

11515011021325 is a deficient number, since it is larger than the sum of its proper divisors (5094804878141).

11515011021325 is an equidigital number, since it uses as much as digits as its factorization.

11515011021325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9400009021 (or 9400009009 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 28.

Adding to 11515011021325 its reverse (52312011051511), we get a palindrome (63827022072836).

The spelling of 11515011021325 in words is "eleven trillion, five hundred fifteen billion, eleven million, twenty-one thousand, three hundred twenty-five".