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225030001 = 7221432
BaseRepresentation
bin11010110100110…
…10111101110001
3120200102201010111
431122122331301
5430101430001
634155101321
75401503100
oct1532327561
9520381114
10225030001
11106029409
1263441841
133780c061
1421c5a037
1514b50851
hexd69af71

225030001 has 9 divisors (see below), whose sum is σ = 261891801. Its totient is φ = 192792852.

The previous prime is 225029993. The next prime is 225030007. The reversal of 225030001 is 100030522.

The square root of 225030001 is 15001.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 225030001 - 23 = 225029993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225030007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 103936 + ... + 106078.

It is an arithmetic number, because the mean of its divisors is an integer number (29099089).

Almost surely, 2225030001 is an apocalyptic number.

225030001 is the 15001-st square number.

225030001 is the 7501-st centered octagonal number.

It is an amenable number.

225030001 is a deficient number, since it is larger than the sum of its proper divisors (36861800).

225030001 is an frugal number, since it uses more digits than its factorization.

225030001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4300 (or 2150 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 13.

The cubic root of 225030001 is about 608.2472312659.

Adding to 225030001 its reverse (100030522), we get a palindrome (325060523).

The spelling of 225030001 in words is "two hundred twenty-five million, thirty thousand, one".

Divisors: 1 7 49 2143 15001 105007 4592449 32147143 225030001