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83231325 = 3252369917
BaseRepresentation
bin1001111011000…
…00001001011101
312210121120220200
410331200021131
5132301400300
612131534113
72030311632
oct475401135
9183546820
1083231325
1142a88a21
1223a5a339
1314322108
14b0a8189
157491200
hex4f6025d

83231325 has 18 divisors (see below), whose sum is σ = 149076954. Its totient is φ = 44389920.

The previous prime is 83231293. The next prime is 83231329. The reversal of 83231325 is 52313238.

It can be written as a sum of positive squares in 3 ways, for example, as 3896676 + 79334649 = 1974^2 + 8907^2 .

It is not a de Polignac number, because 83231325 - 25 = 83231293 is a prime.

It is a super-2 number, since 2×832313252 = 13854906922511250, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83231329) 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 17 ways as a sum of consecutive naturals, for example, 184734 + ... + 185183.

It is an arithmetic number, because the mean of its divisors is an integer number (8282053).

Almost surely, 283231325 is an apocalyptic number.

It is an amenable number.

83231325 is a deficient number, since it is larger than the sum of its proper divisors (65845629).

83231325 is a wasteful number, since it uses less digits than its factorization.

83231325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369933 (or 369925 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 83231325 is about 9123.1203543525. The cubic root of 83231325 is about 436.6119346224.

The spelling of 83231325 in words is "eighty-three million, two hundred thirty-one thousand, three hundred twenty-five".

Divisors: 1 3 5 9 15 25 45 75 225 369917 1109751 1849585 3329253 5548755 9247925 16646265 27743775 83231325