205252520 has 32 divisors (see below), whose sum is σ = 503802720. Its totient is φ = 74637120.

The previous prime is 205252513. The next prime is 205252549. The reversal of 205252520 is 25252502.

It is a happy number.

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, 232802 + ... + 233681.

It is an arithmetic number, because the mean of its divisors is an integer number (15743835).

Almost surely, 2^205252520 is an apocalyptic number.

205252520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

205252520 is an abundant number, since it is smaller than the sum of its proper divisors (298550200).

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

205252520 is a wasteful number, since it uses less digits than its factorization.

205252520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466505 (or 466501 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 23.

The square root of 205252520 is about 14326.6367302309. The cubic root of 205252520 is about 589.8788605070.

The spelling of 205252520 in words is "two hundred five million, two hundred fifty-two thousand, five hundred twenty".