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225568901 = 536436619
BaseRepresentation
bin11010111000111…
…10100010000101
3120201110002100202
431130132202011
5430221201101
634214420245
75406206165
oct1534364205
9521402322
10225568901
11106367288
1263661685
133796a42c
1421d5a5a5
1514c0a36b
hexd71e885

225568901 has 8 divisors (see below), whose sum is σ = 230217120. Its totient is φ = 220935312.

The previous prime is 225568879. The next prime is 225568913. The reversal of 225568901 is 109865522.

225568901 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 a de Polignac number, because none of the positive numbers 2k-225568901 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225568951) 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, 30770 + ... + 37388.

It is an arithmetic number, because the mean of its divisors is an integer number (28777140).

Almost surely, 2225568901 is an apocalyptic number.

It is an amenable number.

225568901 is a deficient number, since it is larger than the sum of its proper divisors (4648219).

225568901 is an equidigital number, since it uses as much as digits as its factorization.

225568901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7315.

The product of its (nonzero) digits is 43200, while the sum is 38.

The square root of 225568901 is about 15018.9513948211. The cubic root of 225568901 is about 608.7323860164.

The spelling of 225568901 in words is "two hundred twenty-five million, five hundred sixty-eight thousand, nine hundred one".

Divisors: 1 53 643 6619 34079 350807 4256017 225568901