225355969 has 8 divisors (see below), whose sum is σ = 227164392. Its totient is φ = 223555200.

The previous prime is 225355943. The next prime is 225355981. The reversal of 225355969 is 969553522.

225355969 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 26884225 + 198471744 = 5185^2 + 14088^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 225355969 - 2⁹ = 225355457 is a prime.

It is a super-2 number, since 2×225355969² = 101570625527857922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225355939) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66619 + ... + 69919.

It is an arithmetic number, because the mean of its divisors is an integer number (28395549).

Almost surely, 2^225355969 is an apocalyptic number.

It is an amenable number.

225355969 is a deficient number, since it is larger than the sum of its proper divisors (1808423).

225355969 is a wasteful number, since it uses less digits than its factorization.

225355969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3827.

The product of its digits is 729000, while the sum is 46.

The square root of 225355969 is about 15011.8609439336. The cubic root of 225355969 is about 608.5407824592.

The spelling of 225355969 in words is "two hundred twenty-five million, three hundred fifty-five thousand, nine hundred sixty-nine".