1225493617 has 2 divisors, whose sum is σ = 1225493618. Its totient is φ = 1225493616.

The previous prime is 1225493611. The next prime is 1225493669. The reversal of 1225493617 is 7163945221.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 978500961 + 246992656 = 31281^2 + 15716^2 .

It is a cyclic number.

It is not a de Polignac number, because 1225493617 - 2³ = 1225493609 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1225493617.

It is not a weakly prime, because it can be changed into another prime (1225493611) 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 as a sum of consecutive naturals, namely, 612746808 + 612746809.

It is an arithmetic number, because the mean of its divisors is an integer number (612746809).

Almost surely, 2^1225493617 is an apocalyptic number.

It is an amenable number.

1225493617 is a deficient number, since it is larger than the sum of its proper divisors (1).

1225493617 is an equidigital number, since it uses as much as digits as its factorization.

1225493617 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90720, while the sum is 40.

The square root of 1225493617 is about 35007.0509611992. The cubic root of 1225493617 is about 1070.1311793635.

The spelling of 1225493617 in words is "one billion, two hundred twenty-five million, four hundred ninety-three thousand, six hundred seventeen".