1320025379 has 2 divisors, whose sum is σ = 1320025380. Its totient is φ = 1320025378.

The previous prime is 1320025363. The next prime is 1320025429. The reversal of 1320025379 is 9735200231.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1320025379 - 2⁴ = 1320025363 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1320025339) 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, 660012689 + 660012690.

It is an arithmetic number, because the mean of its divisors is an integer number (660012690).

Almost surely, 2^1320025379 is an apocalyptic number.

1320025379 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320025379 is an equidigital number, since it uses as much as digits as its factorization.

1320025379 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11340, while the sum is 32.

The square root of 1320025379 is about 36332.1535144836. The cubic root of 1320025379 is about 1096.9683406892.

The spelling of 1320025379 in words is "one billion, three hundred twenty million, twenty-five thousand, three hundred seventy-nine".