1325899587 has 6 divisors (see below), whose sum is σ = 1767950212. Its totient is φ = 883891012.

The previous prime is 1325899579. The next prime is 1325899637. The reversal of 1325899587 is 7859985231.

It is not a de Polignac number, because 1325899587 - 2³ = 1325899579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1325899577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 52558 + ... + 73580.

Almost surely, 2^1325899587 is an apocalyptic number.

1325899587 is a deficient number, since it is larger than the sum of its proper divisors (442050625).

1325899587 is an frugal number, since it uses more digits than its factorization.

1325899587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42049 (or 21026 counting only the distinct ones).

The product of its digits is 5443200, while the sum is 57.

The square root of 1325899587 is about 36412.9041275205. The cubic root of 1325899587 is about 1098.5931289643.

The spelling of 1325899587 in words is "one billion, three hundred twenty-five million, eight hundred ninety-nine thousand, five hundred eighty-seven".