225046681 has 2 divisors, whose sum is σ = 225046682. Its totient is φ = 225046680.

The previous prime is 225046673. The next prime is 225046729. The reversal of 225046681 is 186640522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 146192281 + 78854400 = 12091^2 + 8880^2 .

It is a cyclic number.

It is not a de Polignac number, because 225046681 - 2³ = 225046673 is a prime.

It is a super-2 number, since 2×225046681² = 101292017258231522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (225046181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112523340 + 112523341.

It is an arithmetic number, because the mean of its divisors is an integer number (112523341).

Almost surely, 2^225046681 is an apocalyptic number.

It is an amenable number.

225046681 is a deficient number, since it is larger than the sum of its proper divisors (1).

225046681 is an equidigital number, since it uses as much as digits as its factorization.

225046681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 225046681 is about 15001.5559526337. Note that the first 3 decimals coincide. The cubic root of 225046681 is about 608.2622593556.

The spelling of 225046681 in words is "two hundred twenty-five million, forty-six thousand, six hundred eighty-one".