20275205 has 16 divisors (see below), whose sum is σ = 25557120. Its totient is φ = 15419712.

The previous prime is 20275193. The next prime is 20275207. The reversal of 20275205 is 50257202.

It is a cyclic number.

It is not a de Polignac number, because 20275205 - 2⁸ = 20274949 is a prime.

It is a super-3 number, since 3×20275205³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20275207) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8672 + ... + 10758.

It is an arithmetic number, because the mean of its divisors is an integer number (1597320).

Almost surely, 2^20275205 is an apocalyptic number.

It is an amenable number.

20275205 is a deficient number, since it is larger than the sum of its proper divisors (5281915).

20275205 is a wasteful number, since it uses less digits than its factorization.

20275205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2188.

The product of its (nonzero) digits is 1400, while the sum is 23.

The square root of 20275205 is about 4502.7996846407. The cubic root of 20275205 is about 272.6811297524.

The spelling of 20275205 in words is "twenty million, two hundred seventy-five thousand, two hundred five".