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12378225 = 3521511093
BaseRepresentation
bin101111001110…
…000001110001
3212021212201210
4233032001301
511132100400
61121150333
7210133056
oct57160161
925255653
1012378225
116a94a42
12418b3a9
1327451c2
14190302d
151147950
hexbce071

12378225 has 24 divisors (see below), whose sum is σ = 20619712. Its totient is φ = 6552000.

The previous prime is 12378199. The next prime is 12378241. The reversal of 12378225 is 52287321.

12378225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12378225 - 26 = 12378161 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12378192 and 12378201.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10779 + ... + 11871.

Almost surely, 212378225 is an apocalyptic number.

12378225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12378225 is a deficient number, since it is larger than the sum of its proper divisors (8241487).

12378225 is a wasteful number, since it uses less digits than its factorization.

12378225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1257 (or 1252 counting only the distinct ones).

The product of its digits is 6720, while the sum is 30.

The square root of 12378225 is about 3518.2701715474. The cubic root of 12378225 is about 231.3233417236.

The spelling of 12378225 in words is "twelve million, three hundred seventy-eight thousand, two hundred twenty-five".

Divisors: 1 3 5 15 25 75 151 453 755 1093 2265 3279 3775 5465 11325 16395 27325 81975 165043 495129 825215 2475645 4126075 12378225