225724622777 has 4 divisors (see below), whose sum is σ = 226445788020. Its totient is φ = 225003457536.

The previous prime is 225724622771. The next prime is 225724622789. The reversal of 225724622777 is 777226427522.

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 16336929856 + 209387692921 = 127816^2 + 457589^2 .

It is a cyclic number.

It is not a de Polignac number, because 225724622777 - 2¹⁶ = 225724557241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225724622771) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 360582152 + ... + 360582777.

It is an arithmetic number, because the mean of its divisors is an integer number (56611447005).

Almost surely, 2^225724622777 is an apocalyptic number.

It is an amenable number.

225724622777 is a deficient number, since it is larger than the sum of its proper divisors (721165243).

225724622777 is an equidigital number, since it uses as much as digits as its factorization.

225724622777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 721165242.

The product of its digits is 9219840, while the sum is 53.

The spelling of 225724622777 in words is "two hundred twenty-five billion, seven hundred twenty-four million, six hundred twenty-two thousand, seven hundred seventy-seven".