11321231525 has 6 divisors (see below), whose sum is σ = 14038327122. Its totient is φ = 9056985200.

The previous prime is 11321231521. The next prime is 11321231543. The reversal of 11321231525 is 52513212311.

It can be written as a sum of positive squares in 3 ways, for example, as 868009444 + 10453222081 = 29462^2 + 102241^2 .

It is not a de Polignac number, because 11321231525 - 2² = 11321231521 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11321231494 and 11321231503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11321231521) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 226424606 + ... + 226424655.

It is an arithmetic number, because the mean of its divisors is an integer number (2339721187).

Almost surely, 2^11321231525 is an apocalyptic number.

It is an amenable number.

11321231525 is a deficient number, since it is larger than the sum of its proper divisors (2717095597).

11321231525 is an equidigital number, since it uses as much as digits as its factorization.

11321231525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452849271 (or 452849266 counting only the distinct ones).

The product of its digits is 1800, while the sum is 26.

Adding to 11321231525 its reverse (52513212311), we get a palindrome (63834443836).

The spelling of 11321231525 in words is "eleven billion, three hundred twenty-one million, two hundred thirty-one thousand, five hundred twenty-five".