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225242151 = 32341103773
BaseRepresentation
bin11010110110011…
…10110000100111
3120200211111010220
431123032300213
5430130222101
634203415423
75403345441
oct1533166047
9520744126
10225242151
11106163842
1263524573
13378847a4
1421cb3491
1514b93636
hexd6cec27

225242151 has 32 divisors (see below), whose sum is σ = 324559872. Its totient is φ = 138589440.

The previous prime is 225242107. The next prime is 225242153. The reversal of 225242151 is 151242522.

It is not a de Polignac number, because 225242151 - 213 = 225233959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225242153) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 291001 + ... + 291773.

It is an arithmetic number, because the mean of its divisors is an integer number (10142496).

Almost surely, 2225242151 is an apocalyptic number.

225242151 is a deficient number, since it is larger than the sum of its proper divisors (99317721).

225242151 is a wasteful number, since it uses less digits than its factorization.

225242151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 943.

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

The square root of 225242151 is about 15008.0695294232. The cubic root of 225242151 is about 608.4383155946.

Adding to 225242151 its reverse (151242522), we get a palindrome (376484673).

The spelling of 225242151 in words is "two hundred twenty-five million, two hundred forty-two thousand, one hundred fifty-one".

Divisors: 1 3 23 41 69 103 123 309 773 943 2319 2369 2829 4223 7107 12669 17779 31693 53337 79619 95079 97129 238857 291387 728939 1831237 2186817 3264379 5493711 9793137 75080717 225242151