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68419583725 = 526569416621
BaseRepresentation
bin111111101110000111…
…111111111011101101
320112121021111222022111
4333232013333323231
52110110403134400
651233113044021
74641333603013
oct775607777355
9215537458274
1068419583725
1127020086a19
12113156b6611
1365b4baa6ac
143450b7c8b3
151ba69ce3ba
hexfee1ffeed

68419583725 has 12 divisors (see below), whose sum is σ = 84853402740. Its totient is φ = 54727203200.

The previous prime is 68419583717. The next prime is 68419583731. The reversal of 68419583725 is 52738591486.

It can be written as a sum of positive squares in 6 ways, for example, as 1515622761 + 66903960964 = 38931^2 + 258658^2 .

It is not a de Polignac number, because 68419583725 - 23 = 68419583717 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68419583725.

It is a congruent number.

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, 44086 + ... + 372535.

It is an arithmetic number, because the mean of its divisors is an integer number (7071116895).

Almost surely, 268419583725 is an apocalyptic number.

It is an amenable number.

68419583725 is a deficient number, since it is larger than the sum of its proper divisors (16433819015).

68419583725 is a wasteful number, since it uses less digits than its factorization.

68419583725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423200 (or 423195 counting only the distinct ones).

The product of its digits is 14515200, while the sum is 58.

The spelling of 68419583725 in words is "sixty-eight billion, four hundred nineteen million, five hundred eighty-three thousand, seven hundred twenty-five".

Divisors: 1 5 25 6569 32845 164225 416621 2083105 10415525 2736783349 13683916745 68419583725