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12725624677 = 421111727061
BaseRepresentation
bin10111101101000000…
…11001111101100101
31012211212111201021111
423312200121331211
5202030224442202
65502430145021
7630232011403
oct136640317545
935755451244
1012725624677
115440313197
122571952171
13127a5a653c
1488a146473
154e73056d7
hex2f6819f65

12725624677 has 8 divisors (see below), whose sum is σ = 12767743352. Its totient is φ = 12683563200.

The previous prime is 12725624641. The next prime is 12725624689. The reversal of 12725624677 is 77642652721.

It can be written as a sum of positive squares in 4 ways, for example, as 2587349956 + 10138274721 = 50866^2 + 100689^2 .

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 12725624677 - 223 = 12717236069 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12725624677.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12725625677) 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, 456727 + ... + 483787.

It is an arithmetic number, because the mean of its divisors is an integer number (1595967919).

Almost surely, 212725624677 is an apocalyptic number.

It is an amenable number.

12725624677 is a deficient number, since it is larger than the sum of its proper divisors (42118675).

12725624677 is a wasteful number, since it uses less digits than its factorization.

12725624677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28599.

The product of its digits is 1975680, while the sum is 49.

The spelling of 12725624677 in words is "twelve billion, seven hundred twenty-five million, six hundred twenty-four thousand, six hundred seventy-seven".

Divisors: 1 421 1117 27061 470257 11392681 30227137 12725624677