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225232081 = 317991969
BaseRepresentation
bin11010110110011…
…00010011010001
3120200210222022221
431123030103101
5430124411311
634203301041
75403304204
oct1533142321
9520728287
10225232081
11106157218
126351a781
1337880029
1421cad93b
1514b90671
hexd6cc4d1

225232081 has 8 divisors (see below), whose sum is σ = 235443200. Its totient is φ = 215205120.

The previous prime is 225232079. The next prime is 225232097. The reversal of 225232081 is 180232522.

225232081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 225232081 - 21 = 225232079 is a prime.

It is a super-2 number, since 2×2252320812 = 101458980623181122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225232181) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43536 + ... + 48433.

It is an arithmetic number, because the mean of its divisors is an integer number (29430400).

Almost surely, 2225232081 is an apocalyptic number.

It is an amenable number.

225232081 is a deficient number, since it is larger than the sum of its proper divisors (10211119).

225232081 is an equidigital number, since it uses as much as digits as its factorization.

225232081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92079.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 225232081 is about 15007.7340394878. The cubic root of 225232081 is about 608.4292482196.

The spelling of 225232081 in words is "two hundred twenty-five million, two hundred thirty-two thousand, eighty-one".

Divisors: 1 31 79 2449 91969 2851039 7265551 225232081