205000145 has 8 divisors (see below), whose sum is σ = 281143104. Its totient is φ = 140571504.

The previous prime is 205000141. The next prime is 205000153. The reversal of 205000145 is 541000502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 205000145 - 2² = 205000141 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (205000141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2928539 + ... + 2928608.

It is an arithmetic number, because the mean of its divisors is an integer number (35142888).

Almost surely, 2^205000145 is an apocalyptic number.

It is an amenable number.

205000145 is a deficient number, since it is larger than the sum of its proper divisors (76142959).

205000145 is an equidigital number, since it uses as much as digits as its factorization.

205000145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5857159.

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 205000145 is about 14317.8261268951. The cubic root of 205000145 is about 589.6369930171.

Adding to 205000145 its reverse (541000502), we get a palindrome (746000647).

The spelling of 205000145 in words is "two hundred five million, one hundred forty-five", and thus it is an aban number.