205005156 has 24 divisors (see below), whose sum is σ = 481840800. Its totient is φ = 67835712.

The previous prime is 205005133. The next prime is 205005167. The reversal of 205005156 is 651500502.

205005156 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×205005156² = 84054227973168672, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60706 + ... + 63993.

It is an arithmetic number, because the mean of its divisors is an integer number (20076700).

Almost surely, 2^205005156 is an apocalyptic number.

It is an amenable number.

205005156 is an abundant number, since it is smaller than the sum of its proper divisors (276835644).

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

205005156 is a wasteful number, since it uses less digits than its factorization.

205005156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124843 (or 124841 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 205005156 is about 14318.0011174745. The cubic root of 205005156 is about 589.6417973176.

Adding to 205005156 its reverse (651500502), we get a palindrome (856505658).

The spelling of 205005156 in words is "two hundred five million, five thousand, one hundred fifty-six".