225952081 has 6 divisors (see below), whose sum is σ = 232225350. Its totient is φ = 219843936.

The previous prime is 225952039. The next prime is 225952141. The reversal of 225952081 is 180259522.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 190191681 + 35760400 = 13791^2 + 5980^2 .

It is not a de Polignac number, because 225952081 - 2⁷ = 225951953 is a prime.

It is a super-2 number, since 2×225952081² = 102108685816461122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225952481) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 81156 + ... + 83893.

It is an arithmetic number, because the mean of its divisors is an integer number (38704225).

Almost surely, 2^225952081 is an apocalyptic number.

It is an amenable number.

225952081 is a deficient number, since it is larger than the sum of its proper divisors (6273269).

225952081 is an equidigital number, since it uses as much as digits as its factorization.

225952081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165123 (or 165086 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 34.

The square root of 225952081 is about 15031.7025316496. The cubic root of 225952081 is about 609.0768810847.

The spelling of 225952081 in words is "two hundred twenty-five million, nine hundred fifty-two thousand, eighty-one".