20325689 has 4 divisors (see below), whose sum is σ = 20334720. Its totient is φ = 20316660.

The previous prime is 20325653. The next prime is 20325707. The reversal of 20325689 is 98652302.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 20325689 - 2²⁴ = 3548473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20325619) 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, 1892 + ... + 6650.

It is an arithmetic number, because the mean of its divisors is an integer number (5083680).

Almost surely, 2^20325689 is an apocalyptic number.

It is an amenable number.

20325689 is a deficient number, since it is larger than the sum of its proper divisors (9031).

20325689 is an equidigital number, since it uses as much as digits as its factorization.

20325689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9030.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 20325689 is about 4508.4020450710. The cubic root of 20325689 is about 272.9072618582.

The spelling of 20325689 in words is "twenty million, three hundred twenty-five thousand, six hundred eighty-nine".