205155254 has 12 divisors (see below), whose sum is σ = 309115716. Its totient is φ = 102118692.

The previous prime is 205155227. The next prime is 205155257. The reversal of 205155254 is 452551502.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205155257) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 137597 + ... + 139079.

It is an arithmetic number, because the mean of its divisors is an integer number (25759643).

Almost surely, 2^205155254 is an apocalyptic number.

205155254 is a deficient number, since it is larger than the sum of its proper divisors (103960462).

205155254 is an equidigital number, since it uses as much as digits as its factorization.

205155254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2011 (or 1748 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 29.

The square root of 205155254 is about 14323.2417420080. The cubic root of 205155254 is about 589.7856676232.

The spelling of 205155254 in words is "two hundred five million, one hundred fifty-five thousand, two hundred fifty-four".