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225210853 = 732172979
BaseRepresentation
bin11010110110001…
…11000111100101
3120200202220012201
431123013013211
5430123221403
634203014501
75403155260
oct1533070745
9520686181
10225210853
1110614227a
126350a431
133787347a
1421ca5cd7
1514b8921d
hexd6c71e5

225210853 has 4 divisors (see below), whose sum is σ = 257383840. Its totient is φ = 193037868.

The previous prime is 225210773. The next prime is 225210889. The reversal of 225210853 is 358012522.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 225210853 - 29 = 225210341 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225210893) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16086483 + ... + 16086496.

It is an arithmetic number, because the mean of its divisors is an integer number (64345960).

Almost surely, 2225210853 is an apocalyptic number.

It is an amenable number.

225210853 is a deficient number, since it is larger than the sum of its proper divisors (32172987).

225210853 is an equidigital number, since it uses as much as digits as its factorization.

225210853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32172986.

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 225210853 is about 15007.0267874753. The cubic root of 225210853 is about 608.4101329115.

The spelling of 225210853 in words is "two hundred twenty-five million, two hundred ten thousand, eight hundred fifty-three".

Divisors: 1 7 32172979 225210853