228370725 has 48 divisors (see below), whose sum is σ = 457679040. Its totient is φ = 110721600.

The previous prime is 228370687. The next prime is 228370729. The reversal of 228370725 is 527073822.

It is a happy number.

228370725 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 228370725 - 2⁹ = 228370213 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 228370725.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228370729) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7954 + ... + 22803.

It is an arithmetic number, because the mean of its divisors is an integer number (9534980).

Almost surely, 2^228370725 is an apocalyptic number.

228370725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

228370725 is an abundant number, since it is smaller than the sum of its proper divisors (229308315).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

228370725 is a wasteful number, since it uses less digits than its factorization.

228370725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30787 (or 30776 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The square root of 228370725 is about 15111.9398159204. The cubic root of 228370725 is about 611.2424064697.

The spelling of 228370725 in words is "two hundred twenty-eight million, three hundred seventy thousand, seven hundred twenty-five".