11531425 has 6 divisors (see below), whose sum is σ = 14298998. Its totient is φ = 9225120.

The previous prime is 11531419. The next prime is 11531431. The reversal of 11531425 is 52413511.

It is a happy number.

11531425 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (11531419) and next prime (11531431).

It can be written as a sum of positive squares in 3 ways, for example, as 1846881 + 9684544 = 1359^2 + 3112^2 .

It is not a de Polignac number, because 11531425 - 2¹¹ = 11529377 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11531396 and 11531405.

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, 230604 + ... + 230653.

Almost surely, 2^11531425 is an apocalyptic number.

It is an amenable number.

11531425 is a deficient number, since it is larger than the sum of its proper divisors (2767573).

11531425 is an equidigital number, since it uses as much as digits as its factorization.

11531425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 461267 (or 461262 counting only the distinct ones).

The product of its digits is 600, while the sum is 22.

The square root of 11531425 is about 3395.7951940599. The cubic root of 11531425 is about 225.9232843228.

Adding to 11531425 its reverse (52413511), we get a palindrome (63944936).

The spelling of 11531425 in words is "eleven million, five hundred thirty-one thousand, four hundred twenty-five".