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67486225 = 52312532
BaseRepresentation
bin1000000010111…
…00001000010001
311200222122200211
410001130020101
5114234024400
610410244121
71446423562
oct401341021
9150878624
1067486225
1135104444
121a726641
1310c9b5a1
148d6a169
155dd0dba
hex405c211

67486225 has 27 divisors (see below), whose sum is σ = 88131729. Its totient is φ = 51261600.

The previous prime is 67486217. The next prime is 67486229. The reversal of 67486225 is 52268476.

The square root of 67486225 is 8215.

It is a perfect power (a square), and thus also a powerful number.

67486225 is nontrivially palindromic in base 3.

It can be written as a sum of positive squares in 4 ways, for example, as 508369 + 66977856 = 713^2 + 8184^2 .

It is not a de Polignac number, because 67486225 - 23 = 67486217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (67486229) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1273299 + ... + 1273351.

Almost surely, 267486225 is an apocalyptic number.

67486225 is the 8215-th square number.

67486225 is the 4108-th centered octagonal number.

It is an amenable number.

67486225 is a deficient number, since it is larger than the sum of its proper divisors (20645504).

67486225 is an equidigital number, since it uses as much as digits as its factorization.

With its predecessor (67486224) it forms an eRAP, since the sums of their prime factors are consecutive (177 and 178).

67486225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178 (or 89 counting only the distinct ones).

The product of its digits is 161280, while the sum is 40.

The cubic root of 67486225 is about 407.1349434918.

The spelling of 67486225 in words is "sixty-seven million, four hundred eighty-six thousand, two hundred twenty-five".

Divisors: 1 5 25 31 53 155 265 775 961 1325 1643 2809 4805 8215 14045 24025 41075 50933 70225 87079 254665 435395 1273325 2176975 2699449 13497245 67486225