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30201225 = 3521392897
BaseRepresentation
bin111001100110…
…1010110001001
32002211101021220
41303031112021
530212414400
62555152253
7514464135
oct163152611
962741256
1030201225
111605869a
12a145689
136345762
1440223c5
1529b87a0
hex1ccd589

30201225 has 24 divisors (see below), whose sum is σ = 50309280. Its totient is φ = 15985920.

The previous prime is 30201221. The next prime is 30201229. The reversal of 30201225 is 52210203.

It is an interprime number because it is at equal distance from previous prime (30201221) and next prime (30201229).

It is not a de Polignac number, because 30201225 - 22 = 30201221 is a prime.

It is a super-2 number, since 2×302012252 = 1824227983001250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (30201221) 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 23 ways as a sum of consecutive naturals, for example, 8977 + ... + 11873.

It is an arithmetic number, because the mean of its divisors is an integer number (2096220).

Almost surely, 230201225 is an apocalyptic number.

It is an amenable number.

30201225 is a deficient number, since it is larger than the sum of its proper divisors (20108055).

30201225 is a wasteful number, since it uses less digits than its factorization.

30201225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3049 (or 3044 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 30201225 is about 5495.5641202701. The cubic root of 30201225 is about 311.4164284687.

Adding to 30201225 its reverse (52210203), we get a palindrome (82411428).

The spelling of 30201225 in words is "thirty million, two hundred one thousand, two hundred twenty-five".

Divisors: 1 3 5 15 25 75 139 417 695 2085 2897 3475 8691 10425 14485 43455 72425 217275 402683 1208049 2013415 6040245 10067075 30201225