228416723225 has 6 divisors (see below), whose sum is σ = 283236736830. Its totient is φ = 182733378560.

The previous prime is 228416723221. The next prime is 228416723251. The reversal of 228416723225 is 522327614822.

228416723225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 493550656 + 227923172569 = 22216^2 + 477413^2 .

It is not a de Polignac number, because 228416723225 - 2² = 228416723221 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (228416723221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4568334440 + ... + 4568334489.

It is an arithmetic number, because the mean of its divisors is an integer number (47206122805).

Almost surely, 2^228416723225 is an apocalyptic number.

228416723225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

228416723225 is a deficient number, since it is larger than the sum of its proper divisors (54820013605).

228416723225 is an equidigital number, since it uses as much as digits as its factorization.

228416723225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9136668939 (or 9136668934 counting only the distinct ones).

The product of its digits is 645120, while the sum is 44.

The spelling of 228416723225 in words is "two hundred twenty-eight billion, four hundred sixteen million, seven hundred twenty-three thousand, two hundred twenty-five".