1228147225 has 12 divisors (see below), whose sum is σ = 1532026944. Its totient is φ = 976631120.

The previous prime is 1228147183. The next prime is 1228147229. The reversal of 1228147225 is 5227418221.

It is not a de Polignac number, because 1228147225 - 2⁹ = 1228146713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1228147229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 142909 + ... + 151258.

It is an arithmetic number, because the mean of its divisors is an integer number (127668912).

Almost surely, 2^1228147225 is an apocalyptic number.

It is an amenable number.

1228147225 is a deficient number, since it is larger than the sum of its proper divisors (303879719).

1228147225 is a wasteful number, since it uses less digits than its factorization.

1228147225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294344 (or 294339 counting only the distinct ones).

The product of its digits is 17920, while the sum is 34.

The square root of 1228147225 is about 35044.9315165546. The cubic root of 1228147225 is about 1070.9030211309.

The spelling of 1228147225 in words is "one billion, two hundred twenty-eight million, one hundred forty-seven thousand, two hundred twenty-five".