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8623225 = 52133157
BaseRepresentation
bin100000111001…
…010001111001
3121020002211201
4200321101321
54201420400
6504454201
7133203412
oct40712171
917202751
108623225
11495a836
122a7a361
131a2c000
141206809
15b5506a
hex839479

8623225 has 24 divisors (see below), whose sum is σ = 11657240. Its totient is φ = 6327360.

The previous prime is 8623213. The next prime is 8623247. The reversal of 8623225 is 5223268.

8623225 is digitally balanced in base 3, 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 12 ways, for example, as 8602489 + 20736 = 2933^2 + 144^2 .

It is not a de Polignac number, because 8623225 - 25 = 8623193 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8623193 and 8623202.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 54847 + ... + 55003.

Almost surely, 28623225 is an apocalyptic number.

8623225 is the 1570-th nonagonal number.

It is an amenable number.

8623225 is a deficient number, since it is larger than the sum of its proper divisors (3034015).

8623225 is a wasteful number, since it uses less digits than its factorization.

8623225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206 (or 175 counting only the distinct ones).

The product of its digits is 5760, while the sum is 28.

The square root of 8623225 is about 2936.5328194999. The cubic root of 8623225 is about 205.0642273469.

The spelling of 8623225 in words is "eight million, six hundred twenty-three thousand, two hundred twenty-five".

Divisors: 1 5 13 25 65 157 169 325 785 845 2041 2197 3925 4225 10205 10985 26533 51025 54925 132665 344929 663325 1724645 8623225