1325603899 has 2 divisors, whose sum is σ = 1325603900. Its totient is φ = 1325603898.

The previous prime is 1325603879. The next prime is 1325603959. The reversal of 1325603899 is 9983065231.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1325603899 - 2⁹ = 1325603387 is a prime.

It is not a weakly prime, because it can be changed into another prime (1325603809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 662801949 + 662801950.

It is an arithmetic number, because the mean of its divisors is an integer number (662801950).

Almost surely, 2^1325603899 is an apocalyptic number.

1325603899 is a deficient number, since it is larger than the sum of its proper divisors (1).

1325603899 is an equidigital number, since it uses as much as digits as its factorization.

1325603899 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 349920, while the sum is 46.

The square root of 1325603899 is about 36408.8436921581. The cubic root of 1325603899 is about 1098.5114573810.

The spelling of 1325603899 in words is "one billion, three hundred twenty-five million, six hundred three thousand, eight hundred ninety-nine".