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13330025 = 52618741
BaseRepresentation
bin110010110110…
…011001101001
3221002020100122
4302312121221
511403030100
61153413025
7221206022
oct62663151
927066318
1013330025
117585055
12456a175
1329b94b7
141aadc49
151284985
hexcb6669

13330025 has 12 divisors (see below), whose sum is σ = 16802124. Its totient is φ = 10488000.

The previous prime is 13330007. The next prime is 13330061. The reversal of 13330025 is 52003331.

It can be written as a sum of positive squares in 6 ways, for example, as 4443664 + 8886361 = 2108^2 + 2981^2 .

It is not a de Polignac number, because 13330025 - 28 = 13329769 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13329985 and 13330012.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 2846 + ... + 5895.

It is an arithmetic number, because the mean of its divisors is an integer number (1400177).

Almost surely, 213330025 is an apocalyptic number.

It is an amenable number.

13330025 is a deficient number, since it is larger than the sum of its proper divisors (3472099).

13330025 is an equidigital number, since it uses as much as digits as its factorization.

13330025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8812 (or 8807 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 17.

The square root of 13330025 is about 3651.0306763981. The cubic root of 13330025 is about 237.1066063625.

Adding to 13330025 its reverse (52003331), we get a palindrome (65333356).

The spelling of 13330025 in words is "thirteen million, three hundred thirty thousand, twenty-five".

Divisors: 1 5 25 61 305 1525 8741 43705 218525 533201 2666005 13330025