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30606025 = 529411301
BaseRepresentation
bin111010011000…
…0001011001001
32010120221120111
41310300023021
530313343100
63011554321
7521101252
oct164601311
963527514
1030606025
111630483a
12a2bb9a1
136457a98
1440c9b29
152a486ba
hex1d302c9

30606025 has 12 divisors (see below), whose sum is σ = 38021004. Its totient is φ = 24440000.

The previous prime is 30606011. The next prime is 30606047. The reversal of 30606025 is 52060603.

It can be written as a sum of positive squares in 6 ways, for example, as 5895184 + 24710841 = 2428^2 + 4971^2 .

It is not a de Polignac number, because 30606025 - 29 = 30605513 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30605987 and 30606005.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22875 + ... + 24175.

It is an arithmetic number, because the mean of its divisors is an integer number (3168417).

Almost surely, 230606025 is an apocalyptic number.

It is an amenable number.

30606025 is a deficient number, since it is larger than the sum of its proper divisors (7414979).

30606025 is a wasteful number, since it uses less digits than its factorization.

30606025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2252 (or 2247 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 30606025 is about 5532.2712334086. The cubic root of 30606025 is about 312.8016074784.

Adding to 30606025 its reverse (52060603), we get a palindrome (82666628).

The spelling of 30606025 in words is "thirty million, six hundred six thousand, twenty-five".

Divisors: 1 5 25 941 1301 4705 6505 23525 32525 1224241 6121205 30606025