20325605 has 8 divisors (see below), whose sum is σ = 24423552. Its totient is φ = 16238608.

The previous prime is 20325581. The next prime is 20325619. The reversal of 20325605 is 50652302.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20325605 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 2144 + ... + 6726.

It is an arithmetic number, because the mean of its divisors is an integer number (3052944).

Almost surely, 2^20325605 is an apocalyptic number.

It is an amenable number.

20325605 is a deficient number, since it is larger than the sum of its proper divisors (4097947).

20325605 is an equidigital number, since it uses as much as digits as its factorization.

20325605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5475.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 20325605 is about 4508.3927291220. The cubic root of 20325605 is about 272.9068859097.

Adding to 20325605 its reverse (50652302), we get a palindrome (70977907).

The spelling of 20325605 in words is "twenty million, three hundred twenty-five thousand, six hundred five".