1325322001 has 4 divisors (see below), whose sum is σ = 1332644404. Its totient is φ = 1317999600.

The previous prime is 1325321999. The next prime is 1325322079. The reversal of 1325322001 is 1002235231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1002235231 = 331 ⋅3027901.

It can be written as a sum of positive squares in 2 ways, for example, as 256032001 + 1069290000 = 16001^2 + 32700^2 .

It is a cyclic number.

It is not a de Polignac number, because 1325322001 - 2¹ = 1325321999 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1325322001.

It is not an unprimeable number, because it can be changed into a prime (1325320001) 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 in 3 ways as a sum of consecutive naturals, for example, 3660930 + ... + 3661291.

It is an arithmetic number, because the mean of its divisors is an integer number (333161101).

Almost surely, 2^1325322001 is an apocalyptic number.

It is an amenable number.

1325322001 is a deficient number, since it is larger than the sum of its proper divisors (7322403).

1325322001 is an equidigital number, since it uses as much as digits as its factorization.

1325322001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7322402.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 1325322001 is about 36404.9722016100. The cubic root of 1325322001 is about 1098.4335834056.

Adding to 1325322001 its reverse (1002235231), we get a palindrome (2327557232).

The spelling of 1325322001 in words is "one billion, three hundred twenty-five million, three hundred twenty-two thousand, one".