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82318925 = 52131913331
BaseRepresentation
bin1001110100000…
…01011001001101
312201220020100002
410322001121031
5132033201200
612100214045
72016461603
oct472013115
9181806302
1082318925
1142515477
122369a325
1314092a30
14ad0b873
157360bd5
hex4e8164d

82318925 has 24 divisors (see below), whose sum is σ = 115721760. Its totient is φ = 57585600.

The previous prime is 82318921. The next prime is 82318927. The reversal of 82318925 is 52981328.

It is not a de Polignac number, because 82318925 - 22 = 82318921 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82318921) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 491 + ... + 12840.

It is an arithmetic number, because the mean of its divisors is an integer number (4821740).

Almost surely, 282318925 is an apocalyptic number.

It is an amenable number.

82318925 is a deficient number, since it is larger than the sum of its proper divisors (33402835).

82318925 is a wasteful number, since it uses less digits than its factorization.

82318925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13373 (or 13368 counting only the distinct ones).

The product of its digits is 34560, while the sum is 38.

The square root of 82318925 is about 9072.9777361129. The cubic root of 82318925 is about 435.0106572454.

The spelling of 82318925 in words is "eighty-two million, three hundred eighteen thousand, nine hundred twenty-five".

Divisors: 1 5 13 19 25 65 95 247 325 475 1235 6175 13331 66655 173303 253289 333275 866515 1266445 3292757 4332575 6332225 16463785 82318925