225573251 has 2 divisors, whose sum is σ = 225573252. Its totient is φ = 225573250.

The previous prime is 225573239. The next prime is 225573253. The reversal of 225573251 is 152375522.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225573251 is a prime.

Together with 225573253, 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 (225573253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112786625 + 112786626.

It is an arithmetic number, because the mean of its divisors is an integer number (112786626).

Almost surely, 2^225573251 is an apocalyptic number.

225573251 is a deficient number, since it is larger than the sum of its proper divisors (1).

225573251 is an equidigital number, since it uses as much as digits as its factorization.

225573251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21000, while the sum is 32.

The square root of 225573251 is about 15019.0962111573. The cubic root of 225573251 is about 608.7362990394.

The spelling of 225573251 in words is "two hundred twenty-five million, five hundred seventy-three thousand, two hundred fifty-one".