20325911 has 4 divisors (see below), whose sum is σ = 20364024. Its totient is φ = 20287800.

The previous prime is 20325883. The next prime is 20325941. The reversal of 20325911 is 11952302.

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

It is a cyclic number.

It is not a de Polignac number, because 20325911 - 2⁶ = 20325847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20325941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18245 + ... + 19326.

It is an arithmetic number, because the mean of its divisors is an integer number (5091006).

Almost surely, 2^20325911 is an apocalyptic number.

20325911 is a deficient number, since it is larger than the sum of its proper divisors (38113).

20325911 is an equidigital number, since it uses as much as digits as its factorization.

20325911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38112.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 20325911 is about 4508.4266657006. The cubic root of 20325911 is about 272.9082554316.

The spelling of 20325911 in words is "twenty million, three hundred twenty-five thousand, nine hundred eleven".