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225331393 = 7191694221
BaseRepresentation
bin11010110111001…
…00100011000001
3120201000000120011
431123210203001
5430141101033
634205344521
75404166560
oct1533444301
9521000504
10225331393
111062148a1
1263568141
13378b62b1
1421cd7bd7
1514baeccd
hexd6e48c1

225331393 has 8 divisors (see below), whose sum is σ = 271075520. Its totient is φ = 182975760.

The previous prime is 225331373. The next prime is 225331399. The reversal of 225331393 is 393133522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 225331393 - 25 = 225331361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225331399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 846978 + ... + 847243.

It is an arithmetic number, because the mean of its divisors is an integer number (33884440).

Almost surely, 2225331393 is an apocalyptic number.

It is an amenable number.

225331393 is a deficient number, since it is larger than the sum of its proper divisors (45744127).

225331393 is a wasteful number, since it uses less digits than its factorization.

225331393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1694247.

The product of its digits is 14580, while the sum is 31.

The square root of 225331393 is about 15011.0423688697. The cubic root of 225331393 is about 608.5186603590.

The spelling of 225331393 in words is "two hundred twenty-five million, three hundred thirty-one thousand, three hundred ninety-three".

Divisors: 1 7 19 133 1694221 11859547 32190199 225331393