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145225 = 5237157
BaseRepresentation
bin100011011101001001
321101012201
4203131021
514121400
63040201
71143253
oct433511
9241181
10145225
119a123
1270061
1351142
143acd3
152d06a
hex23749

145225 has 12 divisors (see below), whose sum is σ = 186124. Its totient is φ = 112320.

The previous prime is 145219. The next prime is 145253. The reversal of 145225 is 522541.

Adding to 145225 its reverse (522541), we get a palindrome (667766).

145225 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 6 ways, for example, as 64 + 145161 = 8^2 + 381^2 .

It is not a de Polignac number, because 145225 - 25 = 145193 is a prime.

It is an Ulam number.

It is a Duffinian number.

145225 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 847 + ... + 1003.

2145225 is an apocalyptic number.

It is an amenable number.

145225 is a deficient number, since it is larger than the sum of its proper divisors (40899).

145225 is a wasteful number, since it uses less digits than its factorization.

145225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204 (or 199 counting only the distinct ones).

The product of its digits is 400, while the sum is 19.

The square root of 145225 is about 381.0839802458. The cubic root of 145225 is about 52.5630384120.

The spelling of 145225 in words is "one hundred forty-five thousand, two hundred twenty-five".

Divisors: 1 5 25 37 157 185 785 925 3925 5809 29045 145225