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68597331725 = 5213797264829
BaseRepresentation
bin111111111000101110…
…000011011100001101
320120001122222111201202
4333320232003130031
52110441404103400
651302502515245
74645622461526
oct777056033415
9216048874652
1068597331725
112710145069a
1211365135b25
136612973520
14346a60b84d
151bb73e04d5
hexff8b8370d

68597331725 has 24 divisors (see below), whose sum is σ = 91719103560. Its totient is φ = 50592741120.

The previous prime is 68597331713. The next prime is 68597331749. The reversal of 68597331725 is 52713379586.

It can be written as a sum of positive squares in 12 ways, for example, as 31167077764 + 37430253961 = 176542^2 + 193469^2 .

It is not a de Polignac number, because 68597331725 - 210 = 68597330701 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 126611 + ... + 391439.

It is an arithmetic number, because the mean of its divisors is an integer number (3821629315).

Almost surely, 268597331725 is an apocalyptic number.

68597331725 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

68597331725 is a deficient number, since it is larger than the sum of its proper divisors (23121771835).

68597331725 is a wasteful number, since it uses less digits than its factorization.

68597331725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265649 (or 265644 counting only the distinct ones).

The product of its digits is 9525600, while the sum is 56.

The spelling of 68597331725 in words is "sixty-eight billion, five hundred ninety-seven million, three hundred thirty-one thousand, seven hundred twenty-five".

Divisors: 1 5 13 25 65 325 797 3985 10361 19925 51805 259025 264829 1324145 3442777 6620725 17213885 86069425 211068713 1055343565 2743893269 5276717825 13719466345 68597331725