1325603905 has 8 divisors (see below), whose sum is σ = 1594208232. Its totient is φ = 1058160768.

The previous prime is 1325603899. The next prime is 1325603959. The reversal of 1325603905 is 5093065231.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 75203584 + 1250400321 = 8672^2 + 35361^2 .

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 1325603905 - 2¹¹ = 1325601857 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 287782 + ... + 292351.

It is an arithmetic number, because the mean of its divisors is an integer number (199276029).

Almost surely, 2^1325603905 is an apocalyptic number.

It is an amenable number.

1325603905 is a deficient number, since it is larger than the sum of its proper divisors (268604327).

1325603905 is an equidigital number, since it uses as much as digits as its factorization.

1325603905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580595.

The product of its (nonzero) digits is 24300, while the sum is 34.

The square root of 1325603905 is about 36408.8437745557. The cubic root of 1325603905 is about 1098.5114590384.

The spelling of 1325603905 in words is "one billion, three hundred twenty-five million, six hundred three thousand, nine hundred five".