1325450443 has 4 divisors (see below), whose sum is σ = 1333387440. Its totient is φ = 1317513448.

The previous prime is 1325450437. The next prime is 1325450459. The reversal of 1325450443 is 3440545231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3440545231 = 5309 ⋅648059.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1325450443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1325451443) 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 in 3 ways as a sum of consecutive naturals, for example, 3968248 + ... + 3968581.

It is an arithmetic number, because the mean of its divisors is an integer number (333346860).

Almost surely, 2^1325450443 is an apocalyptic number.

1325450443 is a deficient number, since it is larger than the sum of its proper divisors (7936997).

1325450443 is an equidigital number, since it uses as much as digits as its factorization.

1325450443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7936996.

The product of its (nonzero) digits is 28800, while the sum is 31.

The square root of 1325450443 is about 36406.7362310878. The cubic root of 1325450443 is about 1098.4690667193.

Adding to 1325450443 its reverse (3440545231), we get a palindrome (4765995674).

The spelling of 1325450443 in words is "one billion, three hundred twenty-five million, four hundred fifty thousand, four hundred forty-three".