10000032505 has 4 divisors (see below), whose sum is σ = 12000039012. Its totient is φ = 8000026000.

The previous prime is 10000032473. The next prime is 10000032521. The reversal of 10000032505 is 50523000001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50523000001 = 24979 ⋅2022619.

It can be written as a sum of positive squares in 2 ways, for example, as 2784039696 + 7215992809 = 52764^2 + 84947^2 .

It is not a de Polignac number, because 10000032505 - 2⁵ = 10000032473 is a prime.

It is a Duffinian 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, 1000003246 + ... + 1000003255.

It is an arithmetic number, because the mean of its divisors is an integer number (3000009753).

Almost surely, 2^10000032505 is an apocalyptic number.

It is an amenable number.

10000032505 is a deficient number, since it is larger than the sum of its proper divisors (2000006507).

10000032505 is an equidigital number, since it uses as much as digits as its factorization.

10000032505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2000006506.

The product of its (nonzero) digits is 150, while the sum is 16.

Adding to 10000032505 its reverse (50523000001), we get a palindrome (60523032506).

The spelling of 10000032505 in words is "ten billion, thirty-two thousand, five hundred five".