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68828525 = 523188811
BaseRepresentation
bin1000001101000…
…11110101101101
311210111211222122
410012203311231
5120110003100
610455122325
71464014153
oct406436555
9153454878
1068828525
1135940987
121b0733a5
131134b54c
1491d93d3
156098985
hex41a3d6d

68828525 has 12 divisors (see below), whose sum is σ = 88101504. Its totient is φ = 53286000.

The previous prime is 68828521. The next prime is 68828527. The reversal of 68828525 is 52582886.

It is not a de Polignac number, because 68828525 - 22 = 68828521 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68828521) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43631 + ... + 45180.

It is an arithmetic number, because the mean of its divisors is an integer number (7341792).

Almost surely, 268828525 is an apocalyptic number.

It is an amenable number.

68828525 is a deficient number, since it is larger than the sum of its proper divisors (19272979).

68828525 is a wasteful number, since it uses less digits than its factorization.

68828525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88852 (or 88847 counting only the distinct ones).

The product of its digits is 307200, while the sum is 44.

The square root of 68828525 is about 8296.2958602017. The cubic root of 68828525 is about 409.8165449328.

The spelling of 68828525 in words is "sixty-eight million, eight hundred twenty-eight thousand, five hundred twenty-five".

Divisors: 1 5 25 31 155 775 88811 444055 2220275 2753141 13765705 68828525