205012705 has 8 divisors (see below), whose sum is σ = 246229632. Its totient is φ = 163867248.

The previous prime is 205012681. The next prime is 205012711. The reversal of 205012705 is 507210502.

205012705 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 205012705 - 2²³ = 196624097 is a prime.

It is a super-2 number, since 2×205012705² = 84060418422834050, which contains 22 as substring.

It is a Duffinian 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, 11337 + ... + 23206.

It is an arithmetic number, because the mean of its divisors is an integer number (30778704).

Almost surely, 2^205012705 is an apocalyptic number.

It is an amenable number.

205012705 is a deficient number, since it is larger than the sum of its proper divisors (41216927).

205012705 is a wasteful number, since it uses less digits than its factorization.

205012705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35735.

The product of its (nonzero) digits is 700, while the sum is 22.

The square root of 205012705 is about 14318.2647342477. The cubic root of 205012705 is about 589.6490347799.

The spelling of 205012705 in words is "two hundred five million, twelve thousand, seven hundred five".