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12907025 = 522322447
BaseRepresentation
bin110001001111…
…001000010001
3220021202002222
4301033020101
511301011100
61140350425
7214464545
oct61171021
926252088
1012907025
11731626a
1243a5415
13289bac1
1419dda25
1511ee485
hexc4f211

12907025 has 12 divisors (see below), whose sum is σ = 16701312. Its totient is φ = 9876240.

The previous prime is 12907021. The next prime is 12907049. The reversal of 12907025 is 52070921.

It is not a de Polignac number, because 12907025 - 22 = 12907021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12906985 and 12907003.

It is not an unprimeable number, because it can be changed into a prime (12907021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10649 + ... + 11798.

It is an arithmetic number, because the mean of its divisors is an integer number (1391776).

Almost surely, 212907025 is an apocalyptic number.

It is an amenable number.

12907025 is a deficient number, since it is larger than the sum of its proper divisors (3794287).

12907025 is a wasteful number, since it uses less digits than its factorization.

12907025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22480 (or 22475 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 12907025 is about 3592.6348269759. The cubic root of 12907025 is about 234.5715749345.

Adding to 12907025 its reverse (52070921), we get a palindrome (64977946).

The spelling of 12907025 in words is "twelve million, nine hundred seven thousand, twenty-five".

Divisors: 1 5 23 25 115 575 22447 112235 516281 561175 2581405 12907025