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225151 = 613691
BaseRepresentation
bin110110111101111111
3102102211221
4312331333
524201101
64454211
71625263
oct667577
9372757
10225151
11144183
12aa367
137b634
145c0a3
1546aa1
hex36f7f

225151 has 4 divisors (see below), whose sum is σ = 228904. Its totient is φ = 221400.

The previous prime is 225149. The next prime is 225157. The reversal of 225151 is 151522.

Adding to 225151 its reverse (151522), we get a palindrome (376673).

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 225151 - 21 = 225149 is a prime.

It is the 475-th Hogben number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225157) by changing a digit.

It is a nontrivial repunit in base 474.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1785 + ... + 1906.

It is an arithmetic number, because the mean of its divisors is an integer number (57226).

2225151 is an apocalyptic number.

225151 is a deficient number, since it is larger than the sum of its proper divisors (3753).

225151 is an equidigital number, since it uses as much as digits as its factorization.

225151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3752.

The product of its digits is 100, while the sum is 16.

The square root of 225151 is about 474.5007903049. The cubic root of 225151 is about 60.8356230243.

The spelling of 225151 in words is "two hundred twenty-five thousand, one hundred fifty-one".

Divisors: 1 61 3691 225151