1325261443 has 4 divisors (see below), whose sum is σ = 1445739768. Its totient is φ = 1204783120.

The previous prime is 1325261437. The next prime is 1325261467. The reversal of 1325261443 is 3441625231.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1325261443 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (1325261423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60239146 + ... + 60239167.

It is an arithmetic number, because the mean of its divisors is an integer number (361434942).

Almost surely, 2^1325261443 is an apocalyptic number.

1325261443 is a deficient number, since it is larger than the sum of its proper divisors (120478325).

1325261443 is a wasteful number, since it uses less digits than its factorization.

1325261443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120478324.

The product of its digits is 17280, while the sum is 31.

The square root of 1325261443 is about 36404.1404650625. The cubic root of 1325261443 is about 1098.4168528918.

Adding to 1325261443 its reverse (3441625231), we get a palindrome (4766886674).

The spelling of 1325261443 in words is "one billion, three hundred twenty-five million, two hundred sixty-one thousand, four hundred forty-three".