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158225 = 526329
BaseRepresentation
bin100110101000010001
322001001012
4212220101
520030400
63220305
71226204
oct465021
9261035
10158225
11a8971
1277695
1357032
144193b
1531d35
hex26a11

158225 has 6 divisors (see below), whose sum is σ = 196230. Its totient is φ = 126560.

The previous prime is 158209. The next prime is 158227. The reversal of 158225 is 522851.

It can be written as a sum of positive squares in 3 ways, for example, as 22801 + 135424 = 151^2 + 368^2 .

It is not a de Polignac number, because 158225 - 24 = 158209 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 158225.

It is not an unprimeable number, because it can be changed into a prime (158227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3140 + ... + 3189.

It is an arithmetic number, because the mean of its divisors is an integer number (32705).

2158225 is an apocalyptic number.

It is an amenable number.

158225 is a deficient number, since it is larger than the sum of its proper divisors (38005).

158225 is an equidigital number, since it uses as much as digits as its factorization.

158225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6339 (or 6334 counting only the distinct ones).

The product of its digits is 800, while the sum is 23.

The square root of 158225 is about 397.7750620640. The cubic root of 158225 is about 54.0868515487.

It can be divided in two parts, 158 and 225, that added together give a palindrome (383).

The spelling of 158225 in words is "one hundred fifty-eight thousand, two hundred twenty-five".

Divisors: 1 5 25 6329 31645 158225