205256043 has 12 divisors (see below), whose sum is σ = 296680488. Its totient is φ = 136745280.

The previous prime is 205256039. The next prime is 205256081. The reversal of 205256043 is 340652502.

205256043 is a `hidden beast` number, since 2 + 0 + 52 + 5 + 604 + 3 = 666.

It is not a de Polignac number, because 205256043 - 2² = 205256039 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 205255998 and 205256016.

It is not an unprimeable number, because it can be changed into a prime (205256083) 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, 8163 + ... + 21843.

It is an arithmetic number, because the mean of its divisors is an integer number (24723374).

Almost surely, 2^205256043 is an apocalyptic number.

205256043 is a deficient number, since it is larger than the sum of its proper divisors (91424445).

205256043 is a wasteful number, since it uses less digits than its factorization.

205256043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15354 (or 15351 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 205256043 is about 14326.7596824962. The cubic root of 205256043 is about 589.8822354251.

The spelling of 205256043 in words is "two hundred five million, two hundred fifty-six thousand, forty-three".