11531542325 has 6 divisors (see below), whose sum is σ = 14299112514. Its totient is φ = 9225233840.

The previous prime is 11531542291. The next prime is 11531542331. The reversal of 11531542325 is 52324513511.

It can be written as a sum of positive squares in 3 ways, for example, as 28121809 + 11503420516 = 5303^2 + 107254^2 .

It is not a de Polignac number, because 11531542325 - 2¹⁸ = 11531280181 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11531542291 and 11531542300.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 230630822 + ... + 230630871.

It is an arithmetic number, because the mean of its divisors is an integer number (2383185419).

Almost surely, 2^11531542325 is an apocalyptic number.

It is an amenable number.

11531542325 is a deficient number, since it is larger than the sum of its proper divisors (2767570189).

11531542325 is an equidigital number, since it uses as much as digits as its factorization.

11531542325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461261703 (or 461261698 counting only the distinct ones).

The product of its digits is 18000, while the sum is 32.

The spelling of 11531542325 in words is "eleven billion, five hundred thirty-one million, five hundred forty-two thousand, three hundred twenty-five".