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12575260321 = 131693571369
BaseRepresentation
bin10111011011000101…
…10011111010100001
31012110101120102011021
423231202303322201
5201223231312241
65435455245441
7623424643351
oct135542637241
935411512137
1012575260321
115373452228
12252b519881
1312553aa850
148741a4b61
154d90030d1
hex2ed8b3ea1

12575260321 has 8 divisors (see below), whose sum is σ = 13550610920. Its totient is φ = 11601055872.

The previous prime is 12575260307. The next prime is 12575260381. The reversal of 12575260321 is 12306257521.

It can be written as a sum of positive squares in 4 ways, for example, as 278890000 + 12296370321 = 16700^2 + 110889^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 12575260321 - 229 = 12038389409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12575260381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 263676 + ... + 307693.

It is an arithmetic number, because the mean of its divisors is an integer number (1693826365).

Almost surely, 212575260321 is an apocalyptic number.

It is an amenable number.

12575260321 is a deficient number, since it is larger than the sum of its proper divisors (975350599).

12575260321 is a wasteful number, since it uses less digits than its factorization.

12575260321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 573075.

The product of its (nonzero) digits is 25200, while the sum is 34.

The spelling of 12575260321 in words is "twelve billion, five hundred seventy-five million, two hundred sixty thousand, three hundred twenty-one".

Divisors: 1 13 1693 22009 571369 7427797 967327717 12575260321