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12505233 = 313320647
BaseRepresentation
bin101111101101…
…000010010001
3212112022221210
4233231002101
511200131413
61124010333
7211202256
oct57550221
925468853
1012505233
117071404
1242309a9
13278ac60
14193742d
1511703c3
hexbed091

12505233 has 8 divisors (see below), whose sum is σ = 17956288. Its totient is φ = 7695504.

The previous prime is 12505231. The next prime is 12505237. The reversal of 12505233 is 33250521.

12505233 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12505233 - 21 = 12505231 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12505231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 160285 + ... + 160362.

It is an arithmetic number, because the mean of its divisors is an integer number (2244536).

Almost surely, 212505233 is an apocalyptic number.

12505233 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

12505233 is a deficient number, since it is larger than the sum of its proper divisors (5451055).

12505233 is a wasteful number, since it uses less digits than its factorization.

12505233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320663.

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 12505233 is about 3536.2738864517. The cubic root of 12505233 is about 232.1118230748. Note that the first 3 decimals are identical.

Adding to 12505233 its reverse (33250521), we get a palindrome (45755754).

The spelling of 12505233 in words is "twelve million, five hundred five thousand, two hundred thirty-three".

Divisors: 1 3 13 39 320647 961941 4168411 12505233