205250913 has 24 divisors (see below), whose sum is σ = 339301248. Its totient is φ = 117122112.

The previous prime is 205250897. The next prime is 205250959. The reversal of 205250913 is 319052502.

205250913 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 205250913 - 2⁴ = 205250897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (205250963) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 54045 + ... + 57717.

It is an arithmetic number, because the mean of its divisors is an integer number (14137552).

Almost surely, 2^205250913 is an apocalyptic number.

It is an amenable number.

205250913 is a deficient number, since it is larger than the sum of its proper divisors (134050335).

205250913 is a wasteful number, since it uses less digits than its factorization.

205250913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4573 (or 4570 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 205250913 is about 14326.5806457787. The cubic root of 205250913 is about 589.8773210410.

The spelling of 205250913 in words is "two hundred five million, two hundred fifty thousand, nine hundred thirteen".