224064725 has 18 divisors (see below), whose sum is σ = 281444226. Its totient is φ = 176956000.

The previous prime is 224064721. The next prime is 224064751. The reversal of 224064725 is 527460422.

It can be written as a sum of positive squares in 3 ways, for example, as 3334276 + 220730449 = 1826^2 + 14857^2 .

It is not a de Polignac number, because 224064725 - 2² = 224064721 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 224064691 and 224064700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (224064721) 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 17 ways as a sum of consecutive naturals, for example, 171575 + ... + 172875.

Almost surely, 2^224064725 is an apocalyptic number.

224064725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

224064725 is a deficient number, since it is larger than the sum of its proper divisors (57379501).

224064725 is an equidigital number, since it uses as much as digits as its factorization.

224064725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1477 (or 1389 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 32.

The square root of 224064725 is about 14968.7917014033. The cubic root of 224064725 is about 607.3762837483.

The spelling of 224064725 in words is "two hundred twenty-four million, sixty-four thousand, seven hundred twenty-five".