1155449225 has 24 divisors (see below), whose sum is σ = 1657185600. Its totient is φ = 782752320.

The previous prime is 1155449219. The next prime is 1155449227. The reversal of 1155449225 is 5229445511.

It is not a de Polignac number, because 1155449225 - 2⁶ = 1155449161 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1155449227) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25250 + ... + 54299.

It is an arithmetic number, because the mean of its divisors is an integer number (69049400).

Almost surely, 2^1155449225 is an apocalyptic number.

It is an amenable number.

1155449225 is a deficient number, since it is larger than the sum of its proper divisors (501736375).

1155449225 is an equidigital number, since it uses as much as digits as its factorization.

1155449225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79649 (or 79644 counting only the distinct ones).

The product of its digits is 72000, while the sum is 38.

The square root of 1155449225 is about 33991.8994026518. The cubic root of 1155449225 is about 1049.3417567468.

The spelling of 1155449225 in words is "one billion, one hundred fifty-five million, four hundred forty-nine thousand, two hundred twenty-five".