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225612301 = 417754013
BaseRepresentation
bin11010111001010…
…01001000001101
3120201112021220011
431130221020031
5430224043201
634215353221
75406446545
oct1534511015
9521467804
10225612301
11106396952
1263682811
1337984105
1421d6c325
1514c18151
hexd72920d

225612301 has 4 divisors (see below), whose sum is σ = 225670492. Its totient is φ = 225554112.

The previous prime is 225612239. The next prime is 225612307. The reversal of 225612301 is 103216522.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 103216522 = 251608261.

It can be written as a sum of positive squares in 2 ways, for example, as 115047076 + 110565225 = 10726^2 + 10515^2 .

It is a cyclic number.

It is not a de Polignac number, because 225612301 - 225 = 192057869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225612307) 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 3 ways as a sum of consecutive naturals, for example, 22830 + ... + 31183.

It is an arithmetic number, because the mean of its divisors is an integer number (56417623).

Almost surely, 2225612301 is an apocalyptic number.

It is an amenable number.

225612301 is a deficient number, since it is larger than the sum of its proper divisors (58191).

225612301 is an equidigital number, since it uses as much as digits as its factorization.

225612301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58190.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 225612301 is about 15020.3961665463. The cubic root of 225612301 is about 608.7714240387.

Adding to 225612301 its reverse (103216522), we get a palindrome (328828823).

The spelling of 225612301 in words is "two hundred twenty-five million, six hundred twelve thousand, three hundred one".

Divisors: 1 4177 54013 225612301