1125466609 has 2 divisors, whose sum is σ = 1125466610. Its totient is φ = 1125466608.

The previous prime is 1125466591. The next prime is 1125466621. The reversal of 1125466609 is 9066645211.

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., 1072759009 + 52707600 = 32753^2 + 7260^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1125466609 is a prime.

It is not a weakly prime, because it can be changed into another prime (1125466669) 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, 562733304 + 562733305.

It is an arithmetic number, because the mean of its divisors is an integer number (562733305).

Almost surely, 2^1125466609 is an apocalyptic number.

It is an amenable number.

1125466609 is a deficient number, since it is larger than the sum of its proper divisors (1).

1125466609 is an equidigital number, since it uses as much as digits as its factorization.

1125466609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 1125466609 is about 33547.9747376798. The cubic root of 1125466609 is about 1040.1856821446.

The spelling of 1125466609 in words is "one billion, one hundred twenty-five million, four hundred sixty-six thousand, six hundred nine".