1325756945 has 8 divisors (see below), whose sum is σ = 1591133544. Its totient is φ = 1060455424.

The previous prime is 1325756941. The next prime is 1325756959. The reversal of 1325756945 is 5496575231.

It can be written as a sum of positive squares in 4 ways, for example, as 287296 + 1325469649 = 536^2 + 36407^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1325756945 - 2² = 1325756941 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 1325756945.

It is not an unprimeable number, because it can be changed into a prime (1325756941) 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 7 ways as a sum of consecutive naturals, for example, 33137 + ... + 61233.

It is an arithmetic number, because the mean of its divisors is an integer number (198891693).

Almost surely, 2^1325756945 is an apocalyptic number.

It is an amenable number.

1325756945 is a deficient number, since it is larger than the sum of its proper divisors (265376599).

1325756945 is an equidigital number, since it uses as much as digits as its factorization.

1325756945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37539.

The product of its digits is 1134000, while the sum is 47.

The square root of 1325756945 is about 36410.9454010741. The cubic root of 1325756945 is about 1098.5537315261.

The spelling of 1325756945 in words is "one billion, three hundred twenty-five million, seven hundred fifty-six thousand, nine hundred forty-five".