205825730 has 32 divisors (see below), whose sum is σ = 405459648. Its totient is φ = 74606400.

The previous prime is 205825729. The next prime is 205825733. The reversal of 205825730 is 37528502.

It is a super-2 number, since 2×205825730² = 84728462260065800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (205825733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33584 + ... + 39236.

It is an arithmetic number, because the mean of its divisors is an integer number (12670614).

Almost surely, 2^205825730 is an apocalyptic number.

205825730 is a deficient number, since it is larger than the sum of its proper divisors (199633918).

205825730 is a wasteful number, since it uses less digits than its factorization.

205825730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6002.

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 205825730 is about 14346.6278267752. The cubic root of 205825730 is about 590.4274695867.

The spelling of 205825730 in words is "two hundred five million, eight hundred twenty-five thousand, seven hundred thirty".