205157075 has 24 divisors (see below), whose sum is σ = 260251200. Its totient is φ = 160392960.

The previous prime is 205157063. The next prime is 205157077. The reversal of 205157075 is 570751502.

It is a de Polignac number, because none of the positive numbers 2^k-205157075 is a prime.

It is not an unprimeable number, because it can be changed into a prime (205157077) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 214799 + ... + 215751.

It is an arithmetic number, because the mean of its divisors is an integer number (10843800).

Almost surely, 2^205157075 is an apocalyptic number.

205157075 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

205157075 is a deficient number, since it is larger than the sum of its proper divisors (55094125).

205157075 is a wasteful number, since it uses less digits than its factorization.

205157075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1151 (or 1146 counting only the distinct ones).

The product of its (nonzero) digits is 12250, while the sum is 32.

The square root of 205157075 is about 14323.3053098787. The cubic root of 205157075 is about 589.7874126375.

The spelling of 205157075 in words is "two hundred five million, one hundred fifty-seven thousand, seventy-five".