20325005 has 4 divisors (see below), whose sum is σ = 24390012. Its totient is φ = 16260000.

The previous prime is 20324999. The next prime is 20325049. The reversal of 20325005 is 50052302.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11095561 + 9229444 = 3331^2 + 3038^2 .

It is not a de Polignac number, because 20325005 - 2⁴ = 20324989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2032496 + ... + 2032505.

It is an arithmetic number, because the mean of its divisors is an integer number (6097503).

Almost surely, 2^20325005 is an apocalyptic number.

It is an amenable number.

20325005 is a deficient number, since it is larger than the sum of its proper divisors (4065007).

20325005 is an equidigital number, since it uses as much as digits as its factorization.

20325005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4065006.

The product of its (nonzero) digits is 300, while the sum is 17.

The square root of 20325005 is about 4508.3261860695. The cubic root of 20325005 is about 272.9042005326.

Adding to 20325005 its reverse (50052302), we get a palindrome (70377307).

The spelling of 20325005 in words is "twenty million, three hundred twenty-five thousand, five".