205125655 has 16 divisors (see below), whose sum is σ = 297864000. Its totient is φ = 132383232.

The previous prime is 205125643. The next prime is 205125673. The reversal of 205125655 is 556521502.

It is a cyclic number.

It is not a de Polignac number, because 205125655 - 2¹³ = 205117463 is a prime.

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, 171780 + ... + 172969.

It is an arithmetic number, because the mean of its divisors is an integer number (18616500).

Almost surely, 2^205125655 is an apocalyptic number.

205125655 is a deficient number, since it is larger than the sum of its proper divisors (92738345).

205125655 is a wasteful number, since it uses less digits than its factorization.

205125655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344778.

The product of its (nonzero) digits is 15000, while the sum is 31.

The square root of 205125655 is about 14322.2084540060. The cubic root of 205125655 is about 589.7573022670.

The spelling of 205125655 in words is "two hundred five million, one hundred twenty-five thousand, six hundred fifty-five".