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8230725 = 3252157233
BaseRepresentation
bin11111011001011101000101
3120111011102200
4133121131011
54101340400
6452225113
7126650166
oct37313505
916434380
108230725
114711958
12290b199
131922469
14114376d
15ac8b00
hex7d9745

8230725 has 36 divisors (see below), whose sum is σ = 14899716. Its totient is φ = 4343040.

The previous prime is 8230723. The next prime is 8230727. The reversal of 8230725 is 5270328.

It is an interprime number because it is at equal distance from previous prime (8230723) and next prime (8230727).

It can be written as a sum of positive squares in 6 ways, for example, as 1292769 + 6937956 = 1137^2 + 2634^2 .

It is not a de Polignac number, because 8230725 - 21 = 8230723 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8230723) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 35209 + ... + 35441.

It is an arithmetic number, because the mean of its divisors is an integer number (413881).

Almost surely, 28230725 is an apocalyptic number.

It is an amenable number.

8230725 is a deficient number, since it is larger than the sum of its proper divisors (6668991).

8230725 is a wasteful number, since it uses less digits than its factorization.

8230725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406 (or 398 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 8230725 is about 2868.9240143301. The cubic root of 8230725 is about 201.9045148819.

The spelling of 8230725 in words is "eight million, two hundred thirty thousand, seven hundred twenty-five".

Divisors: 1 3 5 9 15 25 45 75 157 225 233 471 699 785 1165 1413 2097 2355 3495 3925 5825 7065 10485 11775 17475 35325 36581 52425 109743 182905 329229 548715 914525 1646145 2743575 8230725