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84643174225 = 5231218772
BaseRepresentation
bin100111011010100100…
…0000101011101010001
322002110221001202121201
41032311020011131101
52341322123033400
6102515020551201
76054352052461
oct1166510053521
9262427052551
1084643174225
1132995957655
12144a29b2501
137c9c08a69c
14414d6b3ba1
152305e3e06a
hex13b5205751

84643174225 has 27 divisors (see below), whose sum is σ = 108510290481. Its totient is φ = 65495287200.

The previous prime is 84643174223. The next prime is 84643174229. The reversal of 84643174225 is 52247134648.

The square root of 84643174225 is 290935.

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

It can be written as a sum of positive squares in 4 ways, for example, as 18037009 + 84625137216 = 4247^2 + 290904^2 .

It is not a de Polignac number, because 84643174225 - 21 = 84643174223 is a prime.

It is not an unprimeable number, because it can be changed into a prime (84643174223) by changing a digit.

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 26 ways as a sum of consecutive naturals, for example, 45093987 + ... + 45095863.

Almost surely, 284643174225 is an apocalyptic number.

84643174225 is the 290935-th square number.

84643174225 is the 145468-th centered octagonal number.

It is an amenable number.

84643174225 is a deficient number, since it is larger than the sum of its proper divisors (23867116256).

84643174225 is an frugal number, since it uses more digits than its factorization.

84643174225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3826 (or 1913 counting only the distinct ones).

The product of its digits is 1290240, while the sum is 46.

The spelling of 84643174225 in words is "eighty-four billion, six hundred forty-three million, one hundred seventy-four thousand, two hundred twenty-five".

Divisors: 1 5 25 31 155 775 961 1877 4805 9385 24025 46925 58187 290935 1454675 1803797 3523129 9018985 17615645 45094925 88078225 109216999 546084995 2730424975 3385726969 16928634845 84643174225