225547969 has 2 divisors, whose sum is σ = 225547970. Its totient is φ = 225547968.

The previous prime is 225547963. The next prime is 225547981. The reversal of 225547969 is 969745522.

225547969 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 148547344 + 77000625 = 12188^2 + 8775^2 .

It is a cyclic number.

It is not a de Polignac number, because 225547969 - 2¹⁹ = 225023681 is a prime.

It is a super-2 number, since 2×225547969² = 101743772640049922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (225547963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112773984 + 112773985.

It is an arithmetic number, because the mean of its divisors is an integer number (112773985).

Almost surely, 2^225547969 is an apocalyptic number.

It is an amenable number.

225547969 is a deficient number, since it is larger than the sum of its proper divisors (1).

225547969 is an equidigital number, since it uses as much as digits as its factorization.

225547969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1360800, while the sum is 49.

The square root of 225547969 is about 15018.2545257430. The cubic root of 225547969 is about 608.7135560264.

The spelling of 225547969 in words is "two hundred twenty-five million, five hundred forty-seven thousand, nine hundred sixty-nine".