224985681 has 48 divisors (see below), whose sum is σ = 347518080. Its totient is φ = 145411200.

The previous prime is 224985671. The next prime is 224985727. The reversal of 224985681 is 186589422.

It is not a de Polignac number, because 224985681 - 2¹⁰ = 224984657 is a prime.

It is a super-2 number, since 2×224985681² = 101237113310067522, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (224985611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2184276 + ... + 2184378.

It is an arithmetic number, because the mean of its divisors is an integer number (7239960).

Almost surely, 2^224985681 is an apocalyptic number.

It is an amenable number.

224985681 is a deficient number, since it is larger than the sum of its proper divisors (122532399).

224985681 is a wasteful number, since it uses less digits than its factorization.

224985681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308 (or 296 counting only the distinct ones).

The product of its digits is 276480, while the sum is 45.

The square root of 224985681 is about 14999.5226924059. The cubic root of 224985681 is about 608.2072969058.

The spelling of 224985681 in words is "two hundred twenty-four million, nine hundred eighty-five thousand, six hundred eighty-one".