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8148425 = 52397821
BaseRepresentation
bin11111000101010111001001
3120022222112112
4133011113021
54041222200
6450352105
7126155225
oct37052711
916288475
108148425
11466603a
12288b635
1318c3b6c
141121785
15aae535
hex7c55c9

8148425 has 12 divisors (see below), whose sum is σ = 10141836. Its totient is φ = 6494400.

The previous prime is 8148421. The next prime is 8148467. The reversal of 8148425 is 5248418.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 241081 + 7907344 = 491^2 + 2812^2 .

It is not a de Polignac number, because 8148425 - 22 = 8148421 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8148391 and 8148400.

It is not an unprimeable number, because it can be changed into a prime (8148421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9515 + ... + 10335.

It is an arithmetic number, because the mean of its divisors is an integer number (845153).

Almost surely, 28148425 is an apocalyptic number.

It is an amenable number.

8148425 is a deficient number, since it is larger than the sum of its proper divisors (1993411).

8148425 is a wasteful number, since it uses less digits than its factorization.

8148425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1228 (or 1223 counting only the distinct ones).

The product of its digits is 10240, while the sum is 32.

The square root of 8148425 is about 2854.5446221771. The cubic root of 8148425 is about 201.2293035826.

The spelling of 8148425 in words is "eight million, one hundred forty-eight thousand, four hundred twenty-five".

Divisors: 1 5 25 397 821 1985 4105 9925 20525 325937 1629685 8148425