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818248025 = 5274675703
BaseRepresentation
bin110000110001010…
…111100101011001
32010000200022021102
4300301113211121
53133432414100
6213105521145
726163664520
oct6061274531
92100608242
10818248025
1138a974941
121aa0431b5
131006a1a3a
147a9594b7
154bc7dcd5
hex30c57959

818248025 has 12 divisors (see below), whose sum is σ = 1159574592. Its totient is φ = 561084240.

The previous prime is 818247959. The next prime is 818248027. The reversal of 818248025 is 520842818.

818248025 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 818248025 - 218 = 817985881 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 818248025.

It is not an unprimeable number, because it can be changed into a prime (818248027) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2337677 + ... + 2338026.

It is an arithmetic number, because the mean of its divisors is an integer number (96631216).

Almost surely, 2818248025 is an apocalyptic number.

It is an amenable number.

818248025 is a deficient number, since it is larger than the sum of its proper divisors (341326567).

818248025 is a wasteful number, since it uses less digits than its factorization.

818248025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4675720 (or 4675715 counting only the distinct ones).

The product of its (nonzero) digits is 40960, while the sum is 38.

The square root of 818248025 is about 28605.0349589019. The cubic root of 818248025 is about 935.3230888930.

The spelling of 818248025 in words is "eight hundred eighteen million, two hundred forty-eight thousand, twenty-five".

Divisors: 1 5 7 25 35 175 4675703 23378515 32729921 116892575 163649605 818248025