205015004 has 6 divisors (see below), whose sum is σ = 358776264. Its totient is φ = 102507500.

The previous prime is 205015003. The next prime is 205015009. The reversal of 205015004 is 400510502.

205015004 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205015001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25626872 + ... + 25626879.

It is an arithmetic number, because the mean of its divisors is an integer number (59796044).

Almost surely, 2^205015004 is an apocalyptic number.

It is an amenable number.

205015004 is a deficient number, since it is larger than the sum of its proper divisors (153761260).

205015004 is a wasteful number, since it uses less digits than its factorization.

205015004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51253755 (or 51253753 counting only the distinct ones).

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

The square root of 205015004 is about 14318.3450160974. The cubic root of 205015004 is about 589.6512388678.

Adding to 205015004 its reverse (400510502), we get a palindrome (605525506).

The spelling of 205015004 in words is "two hundred five million, fifteen thousand, four".