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13200025 = 52528001
BaseRepresentation
bin110010010110…
…101010011001
3220211122000211
4302112222121
511334400100
61150531121
7220125016
oct62265231
926748024
1013200025
1174a6413
124506aa1
132972287
141a7870d
15125b1ba
hexc96a99

13200025 has 6 divisors (see below), whose sum is σ = 16368062. Its totient is φ = 10560000.

The previous prime is 13200001. The next prime is 13200101. The reversal of 13200025 is 52000231.

13200025 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 1990921 + 11209104 = 1411^2 + 3348^2 .

It is not a de Polignac number, because 13200025 - 221 = 11102873 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13199978 and 13200014.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 263976 + ... + 264025.

Almost surely, 213200025 is an apocalyptic number.

It is an amenable number.

13200025 is a deficient number, since it is larger than the sum of its proper divisors (3168037).

13200025 is an equidigital number, since it uses as much as digits as its factorization.

13200025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 528011 (or 528006 counting only the distinct ones).

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

The square root of 13200025 is about 3633.1838654271. The cubic root of 13200025 is about 236.3332992936. Note that the first 3 decimals are identical.

Adding to 13200025 its reverse (52000231), we get a palindrome (65200256).

The spelling of 13200025 in words is "thirteen million, two hundred thousand, twenty-five".

Divisors: 1 5 25 528001 2640005 13200025