225605251 has 2 divisors, whose sum is σ = 225605252. Its totient is φ = 225605250.

The previous prime is 225605231. The next prime is 225605273. The reversal of 225605251 is 152506522.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 225605251 - 2¹³ = 225597059 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (225605231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112802625 + 112802626.

It is an arithmetic number, because the mean of its divisors is an integer number (112802626).

Almost surely, 2^225605251 is an apocalyptic number.

225605251 is a deficient number, since it is larger than the sum of its proper divisors (1).

225605251 is an equidigital number, since it uses as much as digits as its factorization.

225605251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 225605251 is about 15020.1614838190. The cubic root of 225605251 is about 608.7650829494.

The spelling of 225605251 in words is "two hundred twenty-five million, six hundred five thousand, two hundred fifty-one".