20295205 has 16 divisors (see below), whose sum is σ = 28514304. Its totient is φ = 13576320.

The previous prime is 20295193. The next prime is 20295227. The reversal of 20295205 is 50259202.

It is not a de Polignac number, because 20295205 - 2²¹ = 18198053 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20295205.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5637 + ... + 8506.

It is an arithmetic number, because the mean of its divisors is an integer number (1782144).

Almost surely, 2^20295205 is an apocalyptic number.

It is an amenable number.

20295205 is a deficient number, since it is larger than the sum of its proper divisors (8219099).

20295205 is a wasteful number, since it uses less digits than its factorization.

20295205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14196.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 20295205 is about 4505.0199777581. The cubic root of 20295205 is about 272.7707602539.

The spelling of 20295205 in words is "twenty million, two hundred ninety-five thousand, two hundred five".