1325605243 has 8 divisors (see below), whose sum is σ = 1477455120. Its totient is φ = 1181963520.

The previous prime is 1325605223. The next prime is 1325605279. The reversal of 1325605243 is 3425065231.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1325605243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1325605223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2051698 + ... + 2052343.

It is an arithmetic number, because the mean of its divisors is an integer number (184681890).

Almost surely, 2^1325605243 is an apocalyptic number.

1325605243 is a deficient number, since it is larger than the sum of its proper divisors (151849877).

1325605243 is a wasteful number, since it uses less digits than its factorization.

1325605243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4104077.

The product of its (nonzero) digits is 21600, while the sum is 31.

The square root of 1325605243 is about 36408.8621492076. The cubic root of 1325605243 is about 1098.5118286329.

The spelling of 1325605243 in words is "one billion, three hundred twenty-five million, six hundred five thousand, two hundred forty-three".