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225382580 = 22525494421
BaseRepresentation
bin11010110111100…
…01000010110100
3120201002121202222
431123301002310
5430144220310
634210421512
75404502033
oct1533610264
9521077688
10225382580
1110624a2a5
1263591898
1337903697
1421d0c71a
1514bc0055
hexd6f10b4

225382580 has 24 divisors (see below), whose sum is σ = 473596200. Its totient is φ = 90097280.

The previous prime is 225382571. The next prime is 225382601. The reversal of 225382580 is 85283522.

225382580 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 106048804 + 119333776 = 10298^2 + 10924^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 225382580.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48770 + ... + 53190.

It is an arithmetic number, because the mean of its divisors is an integer number (19733175).

Almost surely, 2225382580 is an apocalyptic number.

225382580 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

225382580 is an abundant number, since it is smaller than the sum of its proper divisors (248213620).

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

225382580 is a wasteful number, since it uses less digits than its factorization.

225382580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6979 (or 6977 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 35.

The square root of 225382580 is about 15012.7472502537. The cubic root of 225382580 is about 608.5647345522.

The spelling of 225382580 in words is "two hundred twenty-five million, three hundred eighty-two thousand, five hundred eighty".

Divisors: 1 2 4 5 10 20 2549 4421 5098 8842 10196 12745 17684 22105 25490 44210 50980 88420 11269129 22538258 45076516 56345645 112691290 225382580