205425113 has 4 divisors (see below), whose sum is σ = 206457600. Its totient is φ = 204392628.

The previous prime is 205425107. The next prime is 205425179. The reversal of 205425113 is 311524502.

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.

It is a cyclic number.

It is not a de Polignac number, because 205425113 - 2⁴ = 205425097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (205425013) 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, 515945 + ... + 516342.

It is an arithmetic number, because the mean of its divisors is an integer number (51614400).

Almost surely, 2^205425113 is an apocalyptic number.

It is an amenable number.

205425113 is a deficient number, since it is larger than the sum of its proper divisors (1032487).

205425113 is a wasteful number, since it uses less digits than its factorization.

205425113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1032486.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 205425113 is about 14332.6589647560. The cubic root of 205425113 is about 590.0441535471.

Adding to 205425113 its reverse (311524502), we get a palindrome (516949615).

The spelling of 205425113 in words is "two hundred five million, four hundred twenty-five thousand, one hundred thirteen".