205251332203 has 4 divisors (see below), whose sum is σ = 205259343408. Its totient is φ = 205243321000.

The previous prime is 205251332197. The next prime is 205251332207. The reversal of 205251332203 is 302233152502.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-205251332203 is a prime.

It is a super-2 number, since 2×205251332203² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (205251332207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3967048 + ... + 4018453.

It is an arithmetic number, because the mean of its divisors is an integer number (51314835852).

Almost surely, 2^205251332203 is an apocalyptic number.

205251332203 is a deficient number, since it is larger than the sum of its proper divisors (8011205).

205251332203 is an equidigital number, since it uses as much as digits as its factorization.

205251332203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8011204.

The product of its (nonzero) digits is 10800, while the sum is 28.

Adding to 205251332203 its reverse (302233152502), we get a palindrome (507484484705).

The spelling of 205251332203 in words is "two hundred five billion, two hundred fifty-one million, three hundred thirty-two thousand, two hundred three".