1125198017 has 2 divisors, whose sum is σ = 1125198018. Its totient is φ = 1125198016.

The previous prime is 1125198007. The next prime is 1125198037. The reversal of 1125198017 is 7108915211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 853574656 + 271623361 = 29216^2 + 16481^2 .

It is a cyclic number.

It is not a de Polignac number, because 1125198017 - 2¹⁴ = 1125181633 is a prime.

It is not a weakly prime, because it can be changed into another prime (1125198007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 562599008 + 562599009.

It is an arithmetic number, because the mean of its divisors is an integer number (562599009).

Almost surely, 2^1125198017 is an apocalyptic number.

It is an amenable number.

1125198017 is a deficient number, since it is larger than the sum of its proper divisors (1).

1125198017 is an equidigital number, since it uses as much as digits as its factorization.

1125198017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 35.

The square root of 1125198017 is about 33543.9713957665. The cubic root of 1125198017 is about 1040.1029289770.

The spelling of 1125198017 in words is "one billion, one hundred twenty-five million, one hundred ninety-eight thousand, seventeen".