1204225289 has 2 divisors, whose sum is σ = 1204225290. Its totient is φ = 1204225288.

The previous prime is 1204225207. The next prime is 1204225313. The reversal of 1204225289 is 9825224021.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 887563264 + 316662025 = 29792^2 + 17795^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1204225289 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1204221289) 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, 602112644 + 602112645.

It is an arithmetic number, because the mean of its divisors is an integer number (602112645).

Almost surely, 2^1204225289 is an apocalyptic number.

It is an amenable number.

1204225289 is a deficient number, since it is larger than the sum of its proper divisors (1).

1204225289 is an equidigital number, since it uses as much as digits as its factorization.

1204225289 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 1204225289 is about 34701.9493544671. The cubic root of 1204225289 is about 1063.9043413846.

The spelling of 1204225289 in words is "one billion, two hundred four million, two hundred twenty-five thousand, two hundred eighty-nine".