32305012505 has 4 divisors (see below), whose sum is σ = 38766015012. Its totient is φ = 25844010000.

The previous prime is 32305012499. The next prime is 32305012583. The reversal of 32305012505 is 50521050323.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50521050323 = 3203 ⋅15773041.

It can be written as a sum of positive squares in 2 ways, for example, as 16888561936 + 15416450569 = 129956^2 + 124163^2 .

It is not a de Polignac number, because 32305012505 - 2²⁸ = 32036577049 is a prime.

It is a super-2 number, since 2×32305012505² (a number of 22 digits) contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3230501246 + ... + 3230501255.

It is an arithmetic number, because the mean of its divisors is an integer number (9691503753).

Almost surely, 2^32305012505 is an apocalyptic number.

It is an amenable number.

32305012505 is a deficient number, since it is larger than the sum of its proper divisors (6461002507).

32305012505 is an equidigital number, since it uses as much as digits as its factorization.

32305012505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6461002506.

The product of its (nonzero) digits is 4500, while the sum is 26.

Adding to 32305012505 its reverse (50521050323), we get a palindrome (82826062828).

The spelling of 32305012505 in words is "thirty-two billion, three hundred five million, twelve thousand, five hundred five".