225133081 has 2 divisors, whose sum is σ = 225133082. Its totient is φ = 225133080.

The previous prime is 225133021. The next prime is 225133087. The reversal of 225133081 is 180331522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 177315856 + 47817225 = 13316^2 + 6915^2 .

It is a cyclic number.

It is not a de Polignac number, because 225133081 - 2⁷ = 225132953 is a prime.

It is a super-2 number, since 2×225133081² = 101369808321105122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (225133087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112566540 + 112566541.

It is an arithmetic number, because the mean of its divisors is an integer number (112566541).

Almost surely, 2^225133081 is an apocalyptic number.

It is an amenable number.

225133081 is a deficient number, since it is larger than the sum of its proper divisors (1).

225133081 is an equidigital number, since it uses as much as digits as its factorization.

225133081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 225133081 is about 15004.4353775809. The cubic root of 225133081 is about 608.3400908155.

The spelling of 225133081 in words is "two hundred twenty-five million, one hundred thirty-three thousand, eighty-one".