225607705 has 4 divisors (see below), whose sum is σ = 270729252. Its totient is φ = 180486160.

The previous prime is 225607699. The next prime is 225607717. The reversal of 225607705 is 507706522.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 76108176 + 149499529 = 8724^2 + 12227^2 .

It is not a de Polignac number, because 225607705 - 2¹³ = 225599513 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 22560766 + ... + 22560775.

It is an arithmetic number, because the mean of its divisors is an integer number (67682313).

Almost surely, 2^225607705 is an apocalyptic number.

It is an amenable number.

225607705 is a deficient number, since it is larger than the sum of its proper divisors (45121547).

225607705 is an equidigital number, since it uses as much as digits as its factorization.

225607705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45121546.

The product of its (nonzero) digits is 29400, while the sum is 34.

The square root of 225607705 is about 15020.2431737972. The cubic root of 225607705 is about 608.7672902032.

The spelling of 225607705 in words is "two hundred twenty-five million, six hundred seven thousand, seven hundred five".