225112081 has 4 divisors (see below), whose sum is σ = 228927600. Its totient is φ = 221296564.

The previous prime is 225112073. The next prime is 225112087. The reversal of 225112081 is 180211522.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 180211522 = 2 ⋅90105761.

It is a cyclic number.

It is not a de Polignac number, because 225112081 - 2³ = 225112073 is a prime.

It is a super-2 number, since 2×225112081² = 101350898024301122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225112087) 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 in 3 ways as a sum of consecutive naturals, for example, 1907671 + ... + 1907788.

It is an arithmetic number, because the mean of its divisors is an integer number (57231900).

Almost surely, 2^225112081 is an apocalyptic number.

It is an amenable number.

225112081 is a deficient number, since it is larger than the sum of its proper divisors (3815519).

225112081 is an equidigital number, since it uses as much as digits as its factorization.

225112081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3815518.

The product of its (nonzero) digits is 320, while the sum is 22.

The square root of 225112081 is about 15003.7355681843. The cubic root of 225112081 is about 608.3211752788.

The spelling of 225112081 in words is "two hundred twenty-five million, one hundred twelve thousand, eighty-one".