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228125 = 5573
BaseRepresentation
bin110111101100011101
3102120221002
4313230131
524300000
64520045
71640042
oct675435
9376832
10228125
11146437
12b0025
137cab1
145d1c9
15478d5
hex37b1d

228125 has 12 divisors (see below), whose sum is σ = 289044. Its totient is φ = 180000.

The previous prime is 228113. The next prime is 228127. The reversal of 228125 is 521822.

It can be written as a sum of positive squares in 6 ways, for example, as 182329 + 45796 = 427^2 + 214^2 .

It is not a de Polignac number, because 228125 - 26 = 228061 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 228097 and 228106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228127) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3089 + ... + 3161.

It is an arithmetic number, because the mean of its divisors is an integer number (24087).

2228125 is an apocalyptic number.

228125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

228125 is a deficient number, since it is larger than the sum of its proper divisors (60919).

228125 is an frugal number, since it uses more digits than its factorization.

228125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98 (or 78 counting only the distinct ones).

The product of its digits is 320, while the sum is 20.

The square root of 228125 is about 477.6243293636. The cubic root of 228125 is about 61.1023097211.

Adding to 228125 its reverse (521822), we get a palindrome (749947).

It can be divided in two parts, 228 and 125, that added together give a palindrome (353).

The spelling of 228125 in words is "two hundred twenty-eight thousand, one hundred twenty-five".

Divisors: 1 5 25 73 125 365 625 1825 3125 9125 45625 228125