1325440043 has 2 divisors, whose sum is σ = 1325440044. Its totient is φ = 1325440042.

The previous prime is 1325440033. The next prime is 1325440073. The reversal of 1325440043 is 3400445231.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1325440043 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 1325439994 and 1325440021.

It is not a weakly prime, because it can be changed into another prime (1325440033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 662720021 + 662720022.

It is an arithmetic number, because the mean of its divisors is an integer number (662720022).

Almost surely, 2^1325440043 is an apocalyptic number.

1325440043 is a deficient number, since it is larger than the sum of its proper divisors (1).

1325440043 is an equidigital number, since it uses as much as digits as its factorization.

1325440043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 1325440043 is about 36406.5934000972. The cubic root of 1325440043 is about 1098.4661937065.

Adding to 1325440043 its reverse (3400445231), we get a palindrome (4725885274).

The spelling of 1325440043 in words is "one billion, three hundred twenty-five million, four hundred forty thousand, forty-three".