228825397 has 2 divisors, whose sum is σ = 228825398. Its totient is φ = 228825396.

The previous prime is 228825391. The next prime is 228825451. The reversal of 228825397 is 793528822.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 181683441 + 47141956 = 13479^2 + 6866^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-228825397 is a prime.

It is a super-2 number, since 2×228825397² = 104722124624415218, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228825391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114412698 + 114412699.

It is an arithmetic number, because the mean of its divisors is an integer number (114412699).

Almost surely, 2^228825397 is an apocalyptic number.

It is an amenable number.

228825397 is a deficient number, since it is larger than the sum of its proper divisors (1).

228825397 is an equidigital number, since it uses as much as digits as its factorization.

228825397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 483840, while the sum is 46.

The square root of 228825397 is about 15126.9758048329. The cubic root of 228825397 is about 611.6477861787.

The spelling of 228825397 in words is "two hundred twenty-eight million, eight hundred twenty-five thousand, three hundred ninety-seven".