20075 has 12 divisors (see below), whose sum is σ = 27528. Its totient is φ = 14400.

The previous prime is 20071. The next prime is 20089. The reversal of 20075 is 57002.

It is not a de Polignac number, because 20075 - 2² = 20071 is a prime.

It is a Duffinian number.

It is a plaindrome in base 7.

It is not an unprimeable number, because it can be changed into a prime (20071) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 239 + ... + 311.

It is an arithmetic number, because the mean of its divisors is an integer number (2294).

2²⁰⁰⁷⁵ is an apocalyptic number.

20075 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20075 is a deficient number, since it is larger than the sum of its proper divisors (7453).

20075 is a wasteful number, since it uses less digits than its factorization.

20075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94 (or 89 counting only the distinct ones).

The product of its (nonzero) digits is 70, while the sum is 14.

The square root of 20075 is about 141.6862731530. The cubic root of 20075 is about 27.1780640615.

Adding to 20075 its reverse (57002), we get a palindrome (77077).

The spelling of 20075 in words is "twenty thousand, seventy-five".