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80012825 = 526414993
BaseRepresentation
bin1001100010011…
…10011000011001
312120120001221222
410301032120121
5130440402300
611534541425
71661045354
oct461163031
9176501858
1080012825
114118a902
1222967875
1313766189
14a8ab29b
157057785
hex4c4e619

80012825 has 12 divisors (see below), whose sum is σ = 99390588. Its totient is φ = 63897600.

The previous prime is 80012813. The next prime is 80012831. The reversal of 80012825 is 52821008.

It can be written as a sum of positive squares in 6 ways, for example, as 17689 + 79995136 = 133^2 + 8944^2 .

It is a de Polignac number, because none of the positive numbers 2k-80012825 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 80012794 and 80012803.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13529 + ... + 18521.

It is an arithmetic number, because the mean of its divisors is an integer number (8282549).

Almost surely, 280012825 is an apocalyptic number.

It is an amenable number.

80012825 is a deficient number, since it is larger than the sum of its proper divisors (19377763).

80012825 is a wasteful number, since it uses less digits than its factorization.

80012825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5644 (or 5639 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 26.

The square root of 80012825 is about 8944.9888205632. The cubic root of 80012825 is about 430.9099622968.

The spelling of 80012825 in words is "eighty million, twelve thousand, eight hundred twenty-five".

Divisors: 1 5 25 641 3205 4993 16025 24965 124825 3200513 16002565 80012825