205455250 has 128 divisors (see below), whose sum is σ = 517031424. Its totient is φ = 59040000.

The previous prime is 205455209. The next prime is 205455269. The reversal of 205455250 is 52554502.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 249840 + ... + 250660.

It is an arithmetic number, because the mean of its divisors is an integer number (4039308).

Almost surely, 2^205455250 is an apocalyptic number.

205455250 is an abundant number, since it is smaller than the sum of its proper divisors (311576174).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

205455250 is a wasteful number, since it uses less digits than its factorization.

205455250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 869 (or 859 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 28.

The square root of 205455250 is about 14333.7102663616. The cubic root of 205455250 is about 590.0730063829.

The spelling of 205455250 in words is "two hundred five million, four hundred fifty-five thousand, two hundred fifty".