225356447 has 2 divisors, whose sum is σ = 225356448. Its totient is φ = 225356446.

The previous prime is 225356431. The next prime is 225356479. The reversal of 225356447 is 744653522.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 225356447 - 2⁴ = 225356431 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 225356447.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225356407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112678223 + 112678224.

It is an arithmetic number, because the mean of its divisors is an integer number (112678224).

Almost surely, 2^225356447 is an apocalyptic number.

225356447 is a deficient number, since it is larger than the sum of its proper divisors (1).

225356447 is an equidigital number, since it uses as much as digits as its factorization.

225356447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 201600, while the sum is 38.

The square root of 225356447 is about 15011.8768646695. The cubic root of 225356447 is about 608.5412127152.

It can be divided in two parts, 22535 and 6447, that added together give a palindrome (28982).

The spelling of 225356447 in words is "two hundred twenty-five million, three hundred fifty-six thousand, four hundred forty-seven".