11225531 has 2 divisors, whose sum is σ = 11225532. Its totient is φ = 11225530.

The previous prime is 11225509. The next prime is 11225549. The reversal of 11225531 is 13552211.

It is a happy number.

11225531 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (13552211) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11225531 is a prime.

It is a super-2 number, since 2×11225531² = 252025092463922, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (11225551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5612765 + 5612766.

It is an arithmetic number, because the mean of its divisors is an integer number (5612766).

Almost surely, 2^11225531 is an apocalyptic number.

11225531 is a deficient number, since it is larger than the sum of its proper divisors (1).

11225531 is an equidigital number, since it uses as much as digits as its factorization.

11225531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 300, while the sum is 20.

The square root of 11225531 is about 3350.4523575183. The cubic root of 11225531 is about 223.9076668242.

Adding to 11225531 its reverse (13552211), we get a palindrome (24777742).

The spelling of 11225531 in words is "eleven million, two hundred twenty-five thousand, five hundred thirty-one".