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12525473 = 106911717
BaseRepresentation
bin101111110001…
…111110100001
3212120100201102
4233301332201
511201303343
61124244145
7211315262
oct57617641
925510642
1012525473
117085634
124240655
13279722c
141940969
1511763b8
hexbf1fa1

12525473 has 4 divisors (see below), whose sum is σ = 12538260. Its totient is φ = 12512688.

The previous prime is 12525463. The next prime is 12525479. The reversal of 12525473 is 37452521.

It is a happy number.

12525473 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 37452521 = 45781953.

It can be written as a sum of positive squares in 2 ways, for example, as 1982464 + 10543009 = 1408^2 + 3247^2 .

It is a cyclic number.

It is not a de Polignac number, because 12525473 - 28 = 12525217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12525479) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4790 + ... + 6927.

It is an arithmetic number, because the mean of its divisors is an integer number (3134565).

Almost surely, 212525473 is an apocalyptic number.

It is an amenable number.

12525473 is a deficient number, since it is larger than the sum of its proper divisors (12787).

12525473 is a wasteful number, since it uses less digits than its factorization.

12525473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12786.

The product of its digits is 8400, while the sum is 29.

The square root of 12525473 is about 3539.1344987158. The cubic root of 12525473 is about 232.2369816385.

Adding to 12525473 its reverse (37452521), we get a palindrome (49977994).

The spelling of 12525473 in words is "twelve million, five hundred twenty-five thousand, four hundred seventy-three".

Divisors: 1 1069 11717 12525473