204225251 has 2 divisors, whose sum is σ = 204225252. Its totient is φ = 204225250.

The previous prime is 204225187. The next prime is 204225253. The reversal of 204225251 is 152522402.

204225251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 204225251 - 2⁶ = 204225187 is a prime.

It is a Sophie Germain prime.

Together with 204225253, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (204225253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102112625 + 102112626.

It is an arithmetic number, because the mean of its divisors is an integer number (102112626).

Almost surely, 2^204225251 is an apocalyptic number.

204225251 is a deficient number, since it is larger than the sum of its proper divisors (1).

204225251 is an equidigital number, since it uses as much as digits as its factorization.

204225251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 204225251 is about 14290.7400438186. The cubic root of 204225251 is about 588.8931186213.

Adding to 204225251 its reverse (152522402), we get a palindrome (356747653).

The spelling of 204225251 in words is "two hundred four million, two hundred twenty-five thousand, two hundred fifty-one".