1225791347 has 6 divisors (see below), whose sum is σ = 1347357564. Its totient is φ = 1114355660.

The previous prime is 1225791323. The next prime is 1225791353. The reversal of 1225791347 is 7431975221.

It is a happy number.

It is not a de Polignac number, because 1225791347 - 2¹⁰ = 1225790323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1225791317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5065133 + ... + 5065374.

It is an arithmetic number, because the mean of its divisors is an integer number (224559594).

Almost surely, 2^1225791347 is an apocalyptic number.

1225791347 is a deficient number, since it is larger than the sum of its proper divisors (121566217).

1225791347 is a wasteful number, since it uses less digits than its factorization.

1225791347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10130529 (or 10130518 counting only the distinct ones).

The product of its digits is 105840, while the sum is 41.

The square root of 1225791347 is about 35011.3031319887. The cubic root of 1225791347 is about 1070.2178340670.

The spelling of 1225791347 in words is "one billion, two hundred twenty-five million, seven hundred ninety-one thousand, three hundred forty-seven".