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65000525 = 525349057
BaseRepresentation
bin1111011111110…
…1010001001101
311112022100221212
43313331101031
5113120004100
610241104205
71416331622
oct367752115
9145270855
1065000525
1133766947
1219928065
131060b065
1488c0349
155a8e635
hex3dfd44d

65000525 has 12 divisors (see below), whose sum is σ = 82123092. Its totient is φ = 51018240.

The previous prime is 65000473. The next prime is 65000549. The reversal of 65000525 is 52500056.

It can be written as a sum of positive squares in 6 ways, for example, as 1304164 + 63696361 = 1142^2 + 7981^2 .

It is not a de Polignac number, because 65000525 - 28 = 65000269 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 65000525.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23204 + ... + 25853.

It is an arithmetic number, because the mean of its divisors is an integer number (6843591).

Almost surely, 265000525 is an apocalyptic number.

It is an amenable number.

65000525 is a deficient number, since it is larger than the sum of its proper divisors (17122567).

65000525 is a wasteful number, since it uses less digits than its factorization.

65000525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49120 (or 49115 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 23.

The square root of 65000525 is about 8062.2903073506. The cubic root of 65000525 is about 402.0736583591.

The spelling of 65000525 in words is "sixty-five million, five hundred twenty-five", and thus it is an aban number.

Divisors: 1 5 25 53 265 1325 49057 245285 1226425 2600021 13000105 65000525