228297618025 has 9 divisors (see below), whose sum is σ = 283092008773. Its totient is φ = 182636183200.

The previous prime is 228297617983. The next prime is 228297618037. The reversal of 228297618025 is 520816792822.

The square root of 228297618025 is 477805.

It is a perfect power (a square), and thus also a powerful number.

228297618025 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 4 ways, for example, as 12039136729 + 216258481296 = 109723^2 + 465036^2 .

It is not a de Polignac number, because 228297618025 - 2¹³ = 228297609833 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 (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2341245 + ... + 2436805.

Almost surely, 2^228297618025 is an apocalyptic number.

228297618025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

228297618025 is the 477805-th square number.

228297618025 is the 238903-rd centered octagonal number.

It is an amenable number.

228297618025 is a deficient number, since it is larger than the sum of its proper divisors (54794390748).

228297618025 is an frugal number, since it uses more digits than its factorization.

228297618025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191132 (or 95566 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 52.

The spelling of 228297618025 in words is "two hundred twenty-eight billion, two hundred ninety-seven million, six hundred eighteen thousand, twenty-five".