228393189025 has 9 divisors (see below), whose sum is σ = 283210517433. Its totient is φ = 182712639600.

The previous prime is 228393188981. The next prime is 228393189049. The reversal of 228393189025 is 520981393822.

The square root of 228393189025 is 477905.

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

It can be written as a sum of positive squares in 4 ways, for example, as 68341984929 + 160051204096 = 261423^2 + 400064^2 .

It is not a de Polignac number, because 228393189025 - 2¹³ = 228393180833 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2341735 + ... + 2437315.

Almost surely, 2^228393189025 is an apocalyptic number.

228393189025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

228393189025 is the 477905-th square number.

228393189025 is the 238953-rd centered octagonal number.

It is an amenable number.

228393189025 is a deficient number, since it is larger than the sum of its proper divisors (54817328408).

228393189025 is an frugal number, since it uses more digits than its factorization.

228393189025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191172 (or 95586 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 52.

The spelling of 228393189025 in words is "two hundred twenty-eight billion, three hundred ninety-three million, one hundred eighty-nine thousand, twenty-five".