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12500424215 = 523108699341
BaseRepresentation
bin10111010010001010…
…10101011000010111
31012021011202100022122
423221011111120113
5201100102033330
65424223250155
7621525565316
oct135105253027
935234670278
1012500424215
115335188804
12250a44995b
131242a37a26
1486828427d
154d266e5e5
hex2e9155617

12500424215 has 8 divisors (see below), whose sum is σ = 15652705248. Its totient is φ = 9565541920.

The previous prime is 12500424191. The next prime is 12500424217. The reversal of 12500424215 is 51242400521.

12500424215 is digitally balanced in base 2, because in such base 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 12500424215 - 210 = 12500423191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12500424217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54349556 + ... + 54349785.

It is an arithmetic number, because the mean of its divisors is an integer number (1956588156).

Almost surely, 212500424215 is an apocalyptic number.

12500424215 is a deficient number, since it is larger than the sum of its proper divisors (3152281033).

12500424215 is a wasteful number, since it uses less digits than its factorization.

12500424215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108699369.

The product of its (nonzero) digits is 3200, while the sum is 26.

Adding to 12500424215 its reverse (51242400521), we get a palindrome (63742824736).

The spelling of 12500424215 in words is "twelve billion, five hundred million, four hundred twenty-four thousand, two hundred fifteen".

Divisors: 1 5 23 115 108699341 543496705 2500084843 12500424215