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13270225 = 522811889
BaseRepresentation
bin110010100111…
…110011010001
3220222012022211
4302213303101
511344121400
61152232121
7220536463
oct62476321
926865284
1013270225
117544131
12453b641
132998207
141a96133
151271dba
hexca7cd1

13270225 has 12 divisors (see below), whose sum is σ = 16522380. Its totient is φ = 10572800.

The previous prime is 13270207. The next prime is 13270253. The reversal of 13270225 is 52207231.

It can be written as a sum of positive squares in 6 ways, for example, as 49729 + 13220496 = 223^2 + 3636^2 .

It is not a de Polignac number, because 13270225 - 27 = 13270097 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13270196 and 13270205.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6081 + ... + 7969.

It is an arithmetic number, because the mean of its divisors is an integer number (1376865).

Almost surely, 213270225 is an apocalyptic number.

It is an amenable number.

13270225 is a deficient number, since it is larger than the sum of its proper divisors (3252155).

13270225 is a wasteful number, since it uses less digits than its factorization.

13270225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2180 (or 2175 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 13270225 is about 3642.8320027144. The cubic root of 13270225 is about 236.7515124826.

Adding to 13270225 its reverse (52207231), we get a palindrome (65477456).

The spelling of 13270225 in words is "thirteen million, two hundred seventy thousand, two hundred twenty-five".

Divisors: 1 5 25 281 1405 1889 7025 9445 47225 530809 2654045 13270225