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12500001251375 = 531112237433287
BaseRepresentation
bin1011010111100110001000…
…1000100110000000101111
31122020222200120122101121012
42311321202020212000233
53114300000310021000
642330231000055435
72430044453353241
oct265714210460057
948228616571535
1012500001251375
113a8a2479174a0
12149a70116457b
136c898bb88101
1431300904a091
1516a248bee735
hexb5e6222602f

12500001251375 has 32 divisors (see below), whose sum is σ = 17032100926464. Its totient is φ = 9083475492000.

The previous prime is 12500001251293. The next prime is 12500001251377. The reversal of 12500001251375 is 57315210000521.

It is not a de Polignac number, because 12500001251375 - 28 = 12500001251119 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 (12500001251377) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2035019 + ... + 5398268.

It is an arithmetic number, because the mean of its divisors is an integer number (532253153952).

Almost surely, 212500001251375 is an apocalyptic number.

12500001251375 is a deficient number, since it is larger than the sum of its proper divisors (4532099675089).

12500001251375 is a wasteful number, since it uses less digits than its factorization.

12500001251375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7434536 (or 7434526 counting only the distinct ones).

The product of its (nonzero) digits is 10500, while the sum is 32.

Adding to 12500001251375 its reverse (57315210000521), we get a palindrome (69815211251896).

The spelling of 12500001251375 in words is "twelve trillion, five hundred billion, one million, two hundred fifty-one thousand, three hundred seventy-five".

Divisors: 1 5 11 25 55 125 275 1223 1375 6115 13453 30575 67265 152875 336325 1681625 7433287 37166435 81766157 185832175 408830785 929160875 2044153925 9090910001 10220769625 45454550005 100000010011 227272750025 500000050055 1136363750125 2500000250275 12500001251375