225779 has 2 divisors, whose sum is σ = 225780. Its totient is φ = 225778.
The previous prime is 225769. The next prime is 225781. The reversal of 225779 is 977522.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 225779 - 28 = 225523 is a prime.
Together with 225781, it forms a pair of twin primes.
It is a Chen prime.
It is a plaindrome in base 10.
It is not a weakly prime, because it can be changed into another prime (225749) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112889 + 112890.
It is an arithmetic number, because the mean of its divisors is an integer number (112890).
2225779 is an apocalyptic number.
225779 is a deficient number, since it is larger than the sum of its proper divisors (1).
225779 is an equidigital number, since it uses as much as digits as its factorization.
225779 is an evil number, because the sum of its binary digits is even.
The product of its digits is 8820, while the sum is 32.
The square root of 225779 is about 475.1620776114. The cubic root of 225779 is about 60.8921322195.
The spelling of 225779 in words is "two hundred twenty-five thousand, seven hundred seventy-nine".
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