205226641 has 2 divisors, whose sum is σ = 205226642. Its totient is φ = 205226640.

The previous prime is 205226629. The next prime is 205226663. The reversal of 205226641 is 146622502.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 187553025 + 17673616 = 13695^2 + 4204^2 .

It is a cyclic number.

It is not a de Polignac number, because 205226641 - 2⁷ = 205226513 is a prime.

It is a super-2 number, since 2×205226641² = 84235948352285762, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (205226611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102613320 + 102613321.

It is an arithmetic number, because the mean of its divisors is an integer number (102613321).

Almost surely, 2^205226641 is an apocalyptic number.

It is an amenable number.

205226641 is a deficient number, since it is larger than the sum of its proper divisors (1).

205226641 is an equidigital number, since it uses as much as digits as its factorization.

205226641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 205226641 is about 14325.7335239771. The cubic root of 205226641 is about 589.8540680925.

The spelling of 205226641 in words is "two hundred five million, two hundred twenty-six thousand, six hundred forty-one".