1115542225 has 12 divisors (see below), whose sum is σ = 1580882944. Its totient is φ = 764943120.

The previous prime is 1115542201. The next prime is 1115542229. The reversal of 1115542225 is 5222455111.

It is not a de Polignac number, because 1115542225 - 2⁷ = 1115542097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1115542193 and 1115542202.

It is not an unprimeable number, because it can be changed into a prime (1115542229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3187089 + ... + 3187438.

Almost surely, 2^1115542225 is an apocalyptic number.

It is an amenable number.

1115542225 is a deficient number, since it is larger than the sum of its proper divisors (465340719).

1115542225 is an equidigital number, since it uses as much as digits as its factorization.

1115542225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6374544 (or 6374539 counting only the distinct ones).

The product of its digits is 4000, while the sum is 28.

The square root of 1115542225 is about 33399.7339061257. The cubic root of 1115542225 is about 1037.1191925131.

Adding to 1115542225 its reverse (5222455111), we get a palindrome (6337997336).

The spelling of 1115542225 in words is "one billion, one hundred fifteen million, five hundred forty-two thousand, two hundred twenty-five".