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225405141 = 31313742187
BaseRepresentation
bin11010110111101…
…10100011010101
3120201010202201120
431123312203111
5430200431031
634211114153
75404624563
oct1533664325
9521122646
10225405141
11106265245
12635a2959
1337910a30
1421d16a33
1514bc6a96
hexd6f68d5

225405141 has 16 divisors (see below), whose sum is σ = 326028864. Its totient is φ = 137695104.

The previous prime is 225405121. The next prime is 225405143. The reversal of 225405141 is 141504522.

It is not a de Polignac number, because 225405141 - 215 = 225372373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225405143) 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 15 ways as a sum of consecutive naturals, for example, 15751 + ... + 26436.

It is an arithmetic number, because the mean of its divisors is an integer number (20376804).

Almost surely, 2225405141 is an apocalyptic number.

It is an amenable number.

225405141 is a deficient number, since it is larger than the sum of its proper divisors (100623723).

225405141 is a wasteful number, since it uses less digits than its factorization.

225405141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42340.

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 225405141 is about 15013.4986262363. The cubic root of 225405141 is about 608.5850398347.

Adding to 225405141 its reverse (141504522), we get a palindrome (366909663).

The spelling of 225405141 in words is "two hundred twenty-five million, four hundred five thousand, one hundred forty-one".

Divisors: 1 3 13 39 137 411 1781 5343 42187 126561 548431 1645293 5779619 17338857 75135047 225405141