205325103405 has 32 divisors (see below), whose sum is σ = 331603240320. Its totient is φ = 108479450880.

The previous prime is 205325103383. The next prime is 205325103439. The reversal of 205325103405 is 504301523502.

It is not a de Polignac number, because 205325103405 - 2⁸ = 205325103149 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10328175 + ... + 10348035.

It is an arithmetic number, because the mean of its divisors is an integer number (10362601260).

Almost surely, 2^205325103405 is an apocalyptic number.

It is an amenable number.

205325103405 is a deficient number, since it is larger than the sum of its proper divisors (126278136915).

205325103405 is a wasteful number, since it uses less digits than its factorization.

205325103405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26301.

The product of its (nonzero) digits is 18000, while the sum is 30.

Adding to 205325103405 its reverse (504301523502), we get a palindrome (709626626907).

The spelling of 205325103405 in words is "two hundred five billion, three hundred twenty-five million, one hundred three thousand, four hundred five".