1325402609 has 8 divisors (see below), whose sum is σ = 1348473120. Its totient is φ = 1302352416.

The previous prime is 1325402599. The next prime is 1325402633. The reversal of 1325402609 is 9062045231.

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 not a de Polignac number, because 1325402609 - 2⁴ = 1325402593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1325402009) 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, 191717 + ... + 198509.

It is an arithmetic number, because the mean of its divisors is an integer number (168559140).

Almost surely, 2^1325402609 is an apocalyptic number.

It is an amenable number.

1325402609 is a deficient number, since it is larger than the sum of its proper divisors (23070511).

1325402609 is an equidigital number, since it uses as much as digits as its factorization.

1325402609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10159.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 1325402609 is about 36406.0792862950. The cubic root of 1325402609 is about 1098.4558523936.

The spelling of 1325402609 in words is "one billion, three hundred twenty-five million, four hundred two thousand, six hundred nine".