205436255 has 16 divisors (see below), whose sum is σ = 250573824. Its totient is φ = 161671200.

The previous prime is 205436239. The next prime is 205436263. The reversal of 205436255 is 552634502.

It is not a de Polignac number, because 205436255 - 2⁴ = 205436239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79514 + ... + 82056.

It is an arithmetic number, because the mean of its divisors is an integer number (15660864).

Almost surely, 2^205436255 is an apocalyptic number.

205436255 is a deficient number, since it is larger than the sum of its proper divisors (45137569).

205436255 is a wasteful number, since it uses less digits than its factorization.

205436255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2806.

The product of its (nonzero) digits is 36000, while the sum is 32.

The square root of 205436255 is about 14333.0476521918. The cubic root of 205436255 is about 590.0548211054.

The spelling of 205436255 in words is "two hundred five million, four hundred thirty-six thousand, two hundred fifty-five".