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12725365061 = 63809199429
BaseRepresentation
bin10111101100111110…
…11010100101000101
31012211212000112011002
423312133122211011
5202030143140221
65502420423045
7630226550453
oct136637324505
935755015132
1012725365061
115440156132
122571847a85
13127a515316
1488a0b99d3
154e72a380b
hex2f67da945

12725365061 has 4 divisors (see below), whose sum is σ = 12725628300. Its totient is φ = 12725101824.

The previous prime is 12725365049. The next prime is 12725365073. The reversal of 12725365061 is 16056352721.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16056352721 = 113142091617.

It is an interprime number because it is at equal distance from previous prime (12725365049) and next prime (12725365073).

It can be written as a sum of positive squares in 2 ways, for example, as 2061704836 + 10663660225 = 45406^2 + 103265^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-12725365061 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 (12725362061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35906 + ... + 163523.

It is an arithmetic number, because the mean of its divisors is an integer number (3181407075).

Almost surely, 212725365061 is an apocalyptic number.

It is an amenable number.

12725365061 is a deficient number, since it is larger than the sum of its proper divisors (263239).

12725365061 is an equidigital number, since it uses as much as digits as its factorization.

12725365061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263238.

The product of its (nonzero) digits is 75600, while the sum is 38.

The spelling of 12725365061 in words is "twelve billion, seven hundred twenty-five million, three hundred sixty-five thousand, sixty-one".

Divisors: 1 63809 199429 12725365061