228380225 has 12 divisors (see below), whose sum is σ = 295504896. Its totient is φ = 174760080.

The previous prime is 228380213. The next prime is 228380237. The reversal of 228380225 is 522083822.

228380225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (228380213) and next prime (228380237).

It is not a de Polignac number, because 228380225 - 2⁸ = 228379969 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 228380191 and 228380200.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 198017 + ... + 199166.

It is an arithmetic number, because the mean of its divisors is an integer number (24625408).

Almost surely, 2^228380225 is an apocalyptic number.

228380225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

228380225 is a deficient number, since it is larger than the sum of its proper divisors (67124671).

228380225 is a wasteful number, since it uses less digits than its factorization.

228380225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397216 (or 397211 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 32.

The square root of 228380225 is about 15112.2541336493. The cubic root of 228380225 is about 611.2508820487.

The spelling of 228380225 in words is "two hundred twenty-eight million, three hundred eighty thousand, two hundred twenty-five".