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8125005218 = 211369318419
BaseRepresentation
bin1111001000100100…
…11011110110100010
3202222020122000211012
413210102123312202
5113120000131333
63422123020522
7405226255601
oct74422336642
922866560735
108125005218
11349a398750
1216a906a742
139c64002c5
14571127a38
1532848de48
hex1e449bda2

8125005218 has 8 divisors (see below), whose sum is σ = 13295463120. Its totient is φ = 3693184180.

The previous prime is 8125005209. The next prime is 8125005241.

It is a happy number.

8125005218 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 184659188 + ... + 184659231.

It is an arithmetic number, because the mean of its divisors is an integer number (1661932890).

Almost surely, 28125005218 is an apocalyptic number.

8125005218 is a deficient number, since it is larger than the sum of its proper divisors (5170457902).

8125005218 is a wasteful number, since it uses less digits than its factorization.

8125005218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369318432.

The product of its (nonzero) digits is 6400, while the sum is 32.

The square root of 8125005218 is about 90138.8108308513. The cubic root of 8125005218 is about 2010.3633096564.

It can be divided in two parts, 812500 and 5218, that added together give a palindrome (817718).

The spelling of 8125005218 in words is "eight billion, one hundred twenty-five million, five thousand, two hundred eighteen".

Divisors: 1 2 11 22 369318419 738636838 4062502609 8125005218