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13432225 = 527332
BaseRepresentation
bin110011001111…
…010110100001
3221021102112211
4303033112201
511414312400
61155522121
7222113002
oct63172641
927242484
1013432225
117644914
1245b9341
132a23b81
141ad91a9
1512a4dba
hexccf5a1

13432225 has 9 divisors (see below), whose sum is σ = 16678713. Its totient is φ = 10731120.

The previous prime is 13432213. The next prime is 13432229. The reversal of 13432225 is 52223431.

The square root of 13432225 is 3665.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 3038049 + 10394176 = 1743^2 + 3224^2 .

It is not a de Polignac number, because 13432225 - 211 = 13430177 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13432196 and 13432205.

It is not an unprimeable number, because it can be changed into a prime (13432229) by changing a digit.

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 8 ways as a sum of consecutive naturals, for example, 17959 + ... + 18691.

Almost surely, 213432225 is an apocalyptic number.

13432225 is the 3665-th square number.

13432225 is the 1833-rd centered octagonal number.

It is an amenable number.

13432225 is a deficient number, since it is larger than the sum of its proper divisors (3246488).

13432225 is an frugal number, since it uses more digits than its factorization.

13432225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1476 (or 738 counting only the distinct ones).

The product of its digits is 1440, while the sum is 22.

The cubic root of 13432225 is about 237.7110220514.

Adding to 13432225 its reverse (52223431), we get a palindrome (65655656).

The spelling of 13432225 in words is "thirteen million, four hundred thirty-two thousand, two hundred twenty-five".

Divisors: 1 5 25 733 3665 18325 537289 2686445 13432225