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8505031625 = 531813131201
BaseRepresentation
bin1111110101111000…
…00111101111001001
3210221201201101001022
413322330013233021
5114404242003000
63523540202225
7420522401366
oct77274075711
923851641038
108505031625
113674961162
121794399375
13a5706a4bc
145a97ad46d
1534ba09585
hex1faf07bc9

8505031625 has 32 divisors (see below), whose sum is σ = 10715935776. Its totient is φ = 6739200000.

The previous prime is 8505031607. The next prime is 8505031627. The reversal of 8505031625 is 5261305058.

8505031625 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 16 ways, for example, as 6603025081 + 1902006544 = 81259^2 + 43612^2 .

It is not a de Polignac number, because 8505031625 - 210 = 8505030601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8505031627) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7081025 + ... + 7082225.

It is an arithmetic number, because the mean of its divisors is an integer number (334872993).

Almost surely, 28505031625 is an apocalyptic number.

It is an amenable number.

8505031625 is a deficient number, since it is larger than the sum of its proper divisors (2210904151).

8505031625 is a wasteful number, since it uses less digits than its factorization.

8505031625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1710 (or 1700 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 35.

The square root of 8505031625 is about 92222.7283536981. The cubic root of 8505031625 is about 2041.2301648171.

The spelling of 8505031625 in words is "eight billion, five hundred five million, thirty-one thousand, six hundred twenty-five".

Divisors: 1 5 25 125 181 313 905 1201 1565 4525 6005 7825 22625 30025 39125 56653 150125 217381 283265 375913 1086905 1416325 1879565 5434525 7081625 9397825 27172625 46989125 68040253 340201265 1701006325 8505031625