Search a number
-
+
12818025 = 3252115179
BaseRepresentation
bin110000111001…
…011001101001
3220010020000200
4300321121221
511240134100
61134422413
7213644223
oct60713151
926106020
1012818025
117265410
124361a09
13286a43c
1419b9413
1511d2e00
hexc39669

12818025 has 36 divisors (see below), whose sum is σ = 25050480. Its totient is φ = 6213600.

The previous prime is 12817979. The next prime is 12818053. The reversal of 12818025 is 52081821.

12818025 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 12818025 - 27 = 12817897 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12818025.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 115 + ... + 5064.

Almost surely, 212818025 is an apocalyptic number.

12818025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12818025 is a deficient number, since it is larger than the sum of its proper divisors (12232455).

12818025 is a wasteful number, since it uses less digits than its factorization.

12818025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5206 (or 5198 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 27.

The square root of 12818025 is about 3580.2269481138. The cubic root of 12818025 is about 234.0311705135.

Adding to 12818025 its reverse (52081821), we get a palindrome (64899846).

The spelling of 12818025 in words is "twelve million, eight hundred eighteen thousand, twenty-five".

Divisors: 1 3 5 9 11 15 25 33 45 55 75 99 165 225 275 495 825 2475 5179 15537 25895 46611 56969 77685 129475 170907 233055 284845 388425 512721 854535 1165275 1424225 2563605 4272675 12818025