228325465 has 8 divisors (see below), whose sum is σ = 274123080. Its totient is φ = 182572032.

The previous prime is 228325441. The next prime is 228325469. The reversal of 228325465 is 564523822.

It can be written as a sum of positive squares in 4 ways, for example, as 50183056 + 178142409 = 7084^2 + 13347^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 228325465 - 2¹⁵ = 228292697 is a prime.

It is not an unprimeable number, because it can be changed into a prime (228325469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1657 + ... + 21433.

It is an arithmetic number, because the mean of its divisors is an integer number (34265385).

Almost surely, 2^228325465 is an apocalyptic number.

It is an amenable number.

228325465 is a deficient number, since it is larger than the sum of its proper divisors (45797615).

228325465 is a wasteful number, since it uses less digits than its factorization.

228325465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22091.

The product of its digits is 115200, while the sum is 37.

The square root of 228325465 is about 15110.4422503115. The cubic root of 228325465 is about 611.2020237994.

It can be divided in two parts, 22 and 8325465, that multiplied together give a triangular number (183160230 = T₁₉₁₃₉).

The spelling of 228325465 in words is "two hundred twenty-eight million, three hundred twenty-five thousand, four hundred sixty-five".