1125299689 has 2 divisors, whose sum is σ = 1125299690. Its totient is φ = 1125299688.

The previous prime is 1125299647. The next prime is 1125299711. The reversal of 1125299689 is 9869925211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 680427225 + 444872464 = 26085^2 + 21092^2 .

It is an emirp because it is prime and its reverse (9869925211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1125299689 - 2⁷ = 1125299561 is a prime.

It is not a weakly prime, because it can be changed into another prime (1125290689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 562649844 + 562649845.

It is an arithmetic number, because the mean of its divisors is an integer number (562649845).

Almost surely, 2^1125299689 is an apocalyptic number.

It is an amenable number.

1125299689 is a deficient number, since it is larger than the sum of its proper divisors (1).

1125299689 is an equidigital number, since it uses as much as digits as its factorization.

1125299689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 699840, while the sum is 52.

The square root of 1125299689 is about 33545.4868648526. The cubic root of 1125299689 is about 1040.1342556586.

The spelling of 1125299689 in words is "one billion, one hundred twenty-five million, two hundred ninety-nine thousand, six hundred eighty-nine".