205125210244 has 6 divisors (see below), whose sum is σ = 358969117934. Its totient is φ = 102562605120.

The previous prime is 205125210221. The next prime is 205125210253. The reversal of 205125210244 is 442012521502.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 148023328644 + 57101881600 = 384738^2 + 238960^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25640651277 + ... + 25640651284.

Almost surely, 2^205125210244 is an apocalyptic number.

It is an amenable number.

205125210244 is a deficient number, since it is larger than the sum of its proper divisors (153843907690).

205125210244 is a wasteful number, since it uses less digits than its factorization.

205125210244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51281302565 (or 51281302563 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 28.

Adding to 205125210244 its reverse (442012521502), we get a palindrome (647137731746).

The spelling of 205125210244 in words is "two hundred five billion, one hundred twenty-five million, two hundred ten thousand, two hundred forty-four".