205057385 has 8 divisors (see below), whose sum is σ = 264997320. Its totient is φ = 151426944.

The previous prime is 205057373. The next prime is 205057399. The reversal of 205057385 is 583750502.

It can be written as a sum of positive squares in 4 ways, for example, as 22915369 + 182142016 = 4787^2 + 13496^2 .

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 205057385 - 2¹⁶ = 204991849 is a prime.

It is a super-2 number, since 2×205057385² = 84097062286076450, which contains 22 as substring.

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, 1577300 + ... + 1577429.

It is an arithmetic number, because the mean of its divisors is an integer number (33124665).

Almost surely, 2^205057385 is an apocalyptic number.

It is an amenable number.

205057385 is a deficient number, since it is larger than the sum of its proper divisors (59939935).

205057385 is a wasteful number, since it uses less digits than its factorization.

205057385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3154747.

The product of its (nonzero) digits is 42000, while the sum is 35.

The square root of 205057385 is about 14319.8248941808. The cubic root of 205057385 is about 589.6918672558.

The spelling of 205057385 in words is "two hundred five million, fifty-seven thousand, three hundred eighty-five".