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225047980 = 22511252399
BaseRepresentation
bin11010110100111…
…11010110101100
3120200110121210101
431122133112230
5430103013410
634155320444
75401606363
oct1532372654
9520417711
10225047980
11106040973
1263450124
13378172b1
1421c627da
1514b55d3a
hexd69f5ac

225047980 has 12 divisors (see below), whose sum is σ = 472600800. Its totient is φ = 90019184.

The previous prime is 225047957. The next prime is 225047983. The reversal of 225047980 is 89740522.

It is not an unprimeable number, because it can be changed into a prime (225047983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5626180 + ... + 5626219.

It is an arithmetic number, because the mean of its divisors is an integer number (39383400).

Almost surely, 2225047980 is an apocalyptic number.

225047980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

225047980 is an abundant number, since it is smaller than the sum of its proper divisors (247552820).

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

225047980 is a wasteful number, since it uses less digits than its factorization.

225047980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11252408 (or 11252406 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 225047980 is about 15001.5992480802. The cubic root of 225047980 is about 608.2634296775.

The spelling of 225047980 in words is "two hundred twenty-five million, forty-seven thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 20 11252399 22504798 45009596 56261995 112523990 225047980