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68830146025 = 5213723832
BaseRepresentation
bin100000000011010011…
…0001010110111101001
320120122220001200220121
41000012212022313221
52111431004133100
651341540523241
74654450405444
oct1000646126751
9216586050817
1068830146025
1127210906503
121140b0b0521
13664bc79774
14348d4d265b
151bcca7c51a
hex100698ade9

68830146025 has 27 divisors (see below), whose sum is σ = 86201985541. Its totient is φ = 54519467840.

The previous prime is 68830146017. The next prime is 68830146107. The reversal of 68830146025 is 52064103886.

The square root of 68830146025 is 262355.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 200817241 + 68629328784 = 14171^2 + 261972^2 .

It is not a de Polignac number, because 68830146025 - 23 = 68830146017 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 179712984 + ... + 179713366.

Almost surely, 268830146025 is an apocalyptic number.

68830146025 is the 262355-th square number.

68830146025 is the 131178-th centered octagonal number.

It is an amenable number.

68830146025 is a deficient number, since it is larger than the sum of its proper divisors (17371839516).

68830146025 is an frugal number, since it uses more digits than its factorization.

68830146025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1050 (or 525 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 43.

The spelling of 68830146025 in words is "sixty-eight billion, eight hundred thirty million, one hundred forty-six thousand, twenty-five".

Divisors: 1 5 25 137 383 685 1915 3425 9575 18769 52471 93845 146689 262355 469225 733445 1311775 3667225 7188527 20096393 35942635 100481965 179713175 502409825 2753205841 13766029205 68830146025