11531316425 has 6 divisors (see below), whose sum is σ = 14298832398. Its totient is φ = 9225053120.

The previous prime is 11531316403. The next prime is 11531316469. The reversal of 11531316425 is 52461313511.

It can be written as a sum of positive squares in 3 ways, for example, as 389036176 + 11142280249 = 19724^2 + 105557^2 .

It is not a de Polignac number, because 11531316425 - 2⁶ = 11531316361 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11531316391 and 11531316400.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 230626304 + ... + 230626353.

It is an arithmetic number, because the mean of its divisors is an integer number (2383138733).

Almost surely, 2^11531316425 is an apocalyptic number.

It is an amenable number.

11531316425 is a deficient number, since it is larger than the sum of its proper divisors (2767515973).

11531316425 is an equidigital number, since it uses as much as digits as its factorization.

11531316425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461252667 (or 461252662 counting only the distinct ones).

The product of its digits is 10800, while the sum is 32.

Adding to 11531316425 its reverse (52461313511), we get a palindrome (63992629936).

The spelling of 11531316425 in words is "eleven billion, five hundred thirty-one million, three hundred sixteen thousand, four hundred twenty-five".