1325069509 has 8 divisors (see below), whose sum is σ = 1341231320. Its totient is φ = 1308980736.

The previous prime is 1325069507. The next prime is 1325069513. The reversal of 1325069509 is 9059605231.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 452753284 + 872316225 = 21278^2 + 29535^2 .

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 1325069509 - 2¹ = 1325069507 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1325069503) 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 7 ways as a sum of consecutive naturals, for example, 18697 + ... + 54769.

It is an arithmetic number, because the mean of its divisors is an integer number (167653915).

Almost surely, 2^1325069509 is an apocalyptic number.

It is an amenable number.

1325069509 is a deficient number, since it is larger than the sum of its proper divisors (16161811).

1325069509 is a wasteful number, since it uses less digits than its factorization.

1325069509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36519.

The product of its (nonzero) digits is 72900, while the sum is 40.

The square root of 1325069509 is about 36401.5042134250. The cubic root of 1325069509 is about 1098.3638234261.

The spelling of 1325069509 in words is "one billion, three hundred twenty-five million, sixty-nine thousand, five hundred nine".