1165425013 has 2 divisors, whose sum is σ = 1165425014. Its totient is φ = 1165425012.

The previous prime is 1165424989. The next prime is 1165425049. The reversal of 1165425013 is 3105245611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 809800849 + 355624164 = 28457^2 + 18858^2 .

It is a cyclic number.

It is not a de Polignac number, because 1165425013 - 2⁹ = 1165424501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1165425073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 582712506 + 582712507.

It is an arithmetic number, because the mean of its divisors is an integer number (582712507).

Almost surely, 2^1165425013 is an apocalyptic number.

It is an amenable number.

1165425013 is a deficient number, since it is larger than the sum of its proper divisors (1).

1165425013 is an equidigital number, since it uses as much as digits as its factorization.

1165425013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 1165425013 is about 34138.3217660154. The cubic root of 1165425013 is about 1052.3530036583.

The spelling of 1165425013 in words is "one billion, one hundred sixty-five million, four hundred twenty-five thousand, thirteen".