1325808005 has 4 divisors (see below), whose sum is σ = 1590969612. Its totient is φ = 1060646400.

The previous prime is 1325807983. The next prime is 1325808023. The reversal of 1325808005 is 5008085231.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5008085231 = 18691 ⋅267941.

It can be written as a sum of positive squares in 2 ways, for example, as 1037419681 + 288388324 = 32209^2 + 16982^2 .

It is not a de Polignac number, because 1325808005 - 2¹⁰ = 1325806981 is a prime.

It is a super-2 number, since 2×1325808005² = 3515533732244160050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132580796 + ... + 132580805.

It is an arithmetic number, because the mean of its divisors is an integer number (397742403).

Almost surely, 2^1325808005 is an apocalyptic number.

It is an amenable number.

1325808005 is a deficient number, since it is larger than the sum of its proper divisors (265161607).

1325808005 is an equidigital number, since it uses as much as digits as its factorization.

1325808005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265161606.

The product of its (nonzero) digits is 9600, while the sum is 32.

The square root of 1325808005 is about 36411.6465571114. The cubic root of 1325808005 is about 1098.5678345218.

The spelling of 1325808005 in words is "one billion, three hundred twenty-five million, eight hundred eight thousand, five".