224631725 has 6 divisors (see below), whose sum is σ = 278543370. Its totient is φ = 179705360.

The previous prime is 224631721. The next prime is 224631733. The reversal of 224631725 is 527136422.

It can be written as a sum of positive squares in 3 ways, for example, as 51529 + 224580196 = 227^2 + 14986^2 .

It is not a de Polignac number, because 224631725 - 2² = 224631721 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 224631691 and 224631700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (224631721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4492610 + ... + 4492659.

It is an arithmetic number, because the mean of its divisors is an integer number (46423895).

Almost surely, 2^224631725 is an apocalyptic number.

224631725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

224631725 is a deficient number, since it is larger than the sum of its proper divisors (53911645).

224631725 is an equidigital number, since it uses as much as digits as its factorization.

224631725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8985279 (or 8985274 counting only the distinct ones).

The product of its digits is 20160, while the sum is 32.

The square root of 224631725 is about 14987.7191393487. The cubic root of 224631725 is about 607.8881779073. Note that the first 3 decimals are identical.

The spelling of 224631725 in words is "two hundred twenty-four million, six hundred thirty-one thousand, seven hundred twenty-five".