1206125369 has 2 divisors, whose sum is σ = 1206125370. Its totient is φ = 1206125368.

The previous prime is 1206125363. The next prime is 1206125407. The reversal of 1206125369 is 9635216021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1198059769 + 8065600 = 34613^2 + 2840^2 .

It is a cyclic number.

It is not a de Polignac number, because 1206125369 - 2²⁰ = 1205076793 is a prime.

It is a super-2 number, since 2×1206125369² = 2909476811490772322, which contains 22 as substring.

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 (1206125363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 603062684 + 603062685.

It is an arithmetic number, because the mean of its divisors is an integer number (603062685).

Almost surely, 2^1206125369 is an apocalyptic number.

It is an amenable number.

1206125369 is a deficient number, since it is larger than the sum of its proper divisors (1).

1206125369 is an equidigital number, since it uses as much as digits as its factorization.

1206125369 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 1206125369 is about 34729.3157001401. The cubic root of 1206125369 is about 1064.4636058081.

The spelling of 1206125369 in words is "one billion, two hundred six million, one hundred twenty-five thousand, three hundred sixty-nine".