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225753570 = 232572931223
BaseRepresentation
bin11010111010010…
…11100111100010
3120201210110200100
431131023213202
5430243103240
634222403230
75410605450
oct1535134742
9521713610
10225753570
11106482aa9
1263730516
1337a034c3
1421da79d0
1514c44e30
hexd74b9e2

225753570 has 96 divisors (see below), whose sum is σ = 673650432. Its totient is φ = 51382656.

The previous prime is 225753559. The next prime is 225753571. The reversal of 225753570 is 75357522.

It is a happy number.

225753570 is a `hidden beast` number, since 2 + 2 + 57 + 535 + 70 = 666.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (225753571) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 183979 + ... + 185201.

It is an arithmetic number, because the mean of its divisors is an integer number (7017192).

Almost surely, 2225753570 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 225753570, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (336825216).

225753570 is an abundant number, since it is smaller than the sum of its proper divisors (447896862).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

225753570 is a wasteful number, since it uses less digits than its factorization.

225753570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1536 (or 1533 counting only the distinct ones).

The product of its (nonzero) digits is 73500, while the sum is 36.

The square root of 225753570 is about 15025.0980030082. The cubic root of 225753570 is about 608.8984599409.

The spelling of 225753570 in words is "two hundred twenty-five million, seven hundred fifty-three thousand, five hundred seventy".

Divisors: 1 2 3 5 6 7 9 10 14 15 18 21 30 35 42 45 63 70 90 105 126 210 293 315 586 630 879 1223 1465 1758 2051 2446 2637 2930 3669 4102 4395 5274 6115 6153 7338 8561 8790 10255 11007 12230 12306 13185 17122 18345 18459 20510 22014 25683 26370 30765 36690 36918 42805 51366 55035 61530 77049 85610 92295 110070 128415 154098 184590 256830 358339 385245 716678 770490 1075017 1791695 2150034 2508373 3225051 3583390 5016746 5375085 6450102 7525119 10750170 12541865 15050238 16125255 22575357 25083730 32250510 37625595 45150714 75251190 112876785 225753570