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13005325 = 52520213
BaseRepresentation
bin110001100111…
…001000001101
3220110201221201
4301213020031
511312132300
61142425501
7215354254
oct61471015
926421851
1013005325
117383103
124432291
132904778
141a2779b
15121d66a
hexc6720d

13005325 has 6 divisors (see below), whose sum is σ = 16126634. Its totient is φ = 10404240.

The previous prime is 13005319. The next prime is 13005331. The reversal of 13005325 is 52350031.

It is an interprime number because it is at equal distance from previous prime (13005319) and next prime (13005331).

It can be written as a sum of positive squares in 3 ways, for example, as 23716 + 12981609 = 154^2 + 3603^2 .

It is not a de Polignac number, because 13005325 - 27 = 13005197 is a prime.

It is a Duffinian number.

It is a congruent number.

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 5 ways as a sum of consecutive naturals, for example, 260082 + ... + 260131.

Almost surely, 213005325 is an apocalyptic number.

It is an amenable number.

13005325 is a deficient number, since it is larger than the sum of its proper divisors (3121309).

13005325 is an equidigital number, since it uses as much as digits as its factorization.

13005325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520223 (or 520218 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 19.

The square root of 13005325 is about 3606.2896444961. The cubic root of 13005325 is about 235.1655691516.

Adding to 13005325 its reverse (52350031), we get a palindrome (65355356).

The spelling of 13005325 in words is "thirteen million, five thousand, three hundred twenty-five".

Divisors: 1 5 25 520213 2601065 13005325