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68271425 = 527337409
BaseRepresentation
bin1000001000110…
…11110101000001
311202110112210022
410010123311001
5114434141200
610435143225
71456204025
oct404336501
9152415708
1068271425
11355a0372
121aa44b15
13111b4ac1
1490d2385
155ed8885
hex411bd41

68271425 has 12 divisors (see below), whose sum is σ = 85818540. Its totient is φ = 53867520.

The previous prime is 68271421. The next prime is 68271431. The reversal of 68271425 is 52417286.

It can be written as a sum of positive squares in 6 ways, for example, as 12306064 + 55965361 = 3508^2 + 7481^2 .

It is not a de Polignac number, because 68271425 - 22 = 68271421 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68271421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16880 + ... + 20529.

It is an arithmetic number, because the mean of its divisors is an integer number (7151545).

Almost surely, 268271425 is an apocalyptic number.

It is an amenable number.

68271425 is a deficient number, since it is larger than the sum of its proper divisors (17547115).

68271425 is a wasteful number, since it uses less digits than its factorization.

68271425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37492 (or 37487 counting only the distinct ones).

The product of its digits is 26880, while the sum is 35.

The square root of 68271425 is about 8262.6524191690. The cubic root of 68271425 is about 408.7078594406.

The spelling of 68271425 in words is "sixty-eight million, two hundred seventy-one thousand, four hundred twenty-five".

Divisors: 1 5 25 73 365 1825 37409 187045 935225 2730857 13654285 68271425