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65525 = 522621
BaseRepresentation
bin1111111111110101
310022212212
433333311
54044100
61223205
7362015
oct177765
9108785
1065525
1145259
1231b05
1323a95
1419c45
1514635
hexfff5

65525 has 6 divisors (see below), whose sum is σ = 81282. Its totient is φ = 52400.

The previous prime is 65521. The next prime is 65537. The reversal of 65525 is 52556.

It can be written as a sum of positive squares in 3 ways, for example, as 11236 + 54289 = 106^2 + 233^2 .

It is not a de Polignac number, because 65525 - 22 = 65521 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 4 and base 16.

It is a zygodrome in base 4.

It is a self number, because there is not a number n which added to its sum of digits gives 65525.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 65525.

It is not an unprimeable number, because it can be changed into a prime (65521) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1286 + ... + 1335.

It is an arithmetic number, because the mean of its divisors is an integer number (13547).

265525 is an apocalyptic number.

It is an amenable number.

65525 is a deficient number, since it is larger than the sum of its proper divisors (15757).

65525 is a wasteful number, since it uses less digits than its factorization.

65525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2631 (or 2626 counting only the distinct ones).

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

The square root of 65525 is about 255.9785147234. The cubic root of 65525 is about 40.3152177524.

The spelling of 65525 in words is "sixty-five thousand, five hundred twenty-five".

Divisors: 1 5 25 2621 13105 65525