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45311508225 = 32522326172
BaseRepresentation
bin101010001100110001…
…101011111100000001
311022221211121010000100
4222030301223330001
51220244221230400
632452114513013
73162601315344
oct521461537401
9138854533010
1045311508225
111824218a865
128946895769
13437160b139
14229bb9a45b
1512a2e72100
hexa8cc6bf01

45311508225 has 81 divisors (see below), whose sum is σ = 84977696713. Its totient is φ = 23077971840.

The previous prime is 45311508211. The next prime is 45311508227. The reversal of 45311508225 is 52280511354.

The square root of 45311508225 is 212865.

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 21337321329 + 23974186896 = 146073^2 + 154836^2 .

It is not a de Polignac number, because 45311508225 - 233 = 36721573633 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 45311508225.

It is not an unprimeable number, because it can be changed into a prime (45311508227) 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 80 ways as a sum of consecutive naturals, for example, 73438117 + ... + 73438733.

Almost surely, 245311508225 is an apocalyptic number.

45311508225 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

45311508225 is the 212865-th square number.

45311508225 is the 106433-rd centered octagonal number.

It is an amenable number.

45311508225 is a deficient number, since it is larger than the sum of its proper divisors (39666188488).

45311508225 is an equidigital number, since it uses as much as digits as its factorization.

45311508225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1296 (or 648 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 36.

Multiplying 45311508225 by its sum of digits (36), we get a square (1631214296100 = 12771902).

It can be divided in two parts, 45311 and 508225, that added together give a square (553536 = 7442).

The spelling of 45311508225 in words is "forty-five billion, three hundred eleven million, five hundred eight thousand, two hundred twenty-five".

Divisors: 1 3 5 9 15 23 25 45 69 75 115 207 225 345 529 575 617 1035 1587 1725 1851 2645 3085 4761 5175 5553 7935 9255 13225 14191 15425 23805 27765 39675 42573 46275 70955 119025 127719 138825 212865 326393 354775 380689 638595 979179 1064325 1142067 1631965 1903445 2937537 3192975 3426201 4895895 5710335 8159825 8755847 9517225 14687685 17131005 24479475 26267541 28551675 43779235 73438425 78802623 85655025 131337705 201384481 218896175 394013115 604153443 656688525 1006922405 1812460329 1970065575 3020767215 5034612025 9062301645 15103836075 45311508225