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225025 = 529001
BaseRepresentation
bin110110111100000001
3102102200021
4312330001
524200100
64453441
71625023
oct667401
9372607
10225025
11144079
12aa281
137b568
145c013
1546a1a
hex36f01

225025 has 6 divisors (see below), whose sum is σ = 279062. Its totient is φ = 180000.

The previous prime is 225023. The next prime is 225037. The reversal of 225025 is 520522.

225025 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 1296 + 223729 = 36^2 + 473^2 .

It is not a de Polignac number, because 225025 - 21 = 225023 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225023) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4476 + ... + 4525.

2225025 is an apocalyptic number.

225025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

225025 is a deficient number, since it is larger than the sum of its proper divisors (54037).

225025 is an equidigital number, since it uses as much as digits as its factorization.

225025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9011 (or 9006 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 16.

The square root of 225025 is about 474.3680006071. The cubic root of 225025 is about 60.8242725397.

Adding to 225025 its reverse (520522), we get a palindrome (745547).

The spelling of 225025 in words is "two hundred twenty-five thousand, twenty-five".

Divisors: 1 5 25 9001 45005 225025