80680425849 has 27 divisors (see below), whose sum is σ = 118247848173. Its totient is φ = 53009240832.

The previous prime is 80680425841. The next prime is 80680425863. The reversal of 80680425849 is 94852408608.

The square root of 80680425849 is 284043.

It is a perfect power (a square), and thus also a powerful number.

80680425849 is a `hidden beast` number, since 80 + 68 + 0 + 425 + 84 + 9 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 41333736249 + 39346689600 = 203307^2 + 198360^2 .

It is not a de Polignac number, because 80680425849 - 2³ = 80680425841 is a prime.

It is a super-2 number, since 2×80680425849² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 80680425795 and 80680425804.

It is not an unprimeable number, because it can be changed into a prime (80680425841) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 62204769 + ... + 62206065.

Almost surely, 2^80680425849 is an apocalyptic number.

80680425849 is the 284043-rd square number.

80680425849 is the 142022-nd centered octagonal number.

It is an amenable number.

80680425849 is a deficient number, since it is larger than the sum of its proper divisors (37567422324).

80680425849 is an frugal number, since it uses more digits than its factorization.

80680425849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2746 (or 1373 counting only the distinct ones).

The product of its (nonzero) digits is 4423680, while the sum is 54.

The spelling of 80680425849 in words is "eighty billion, six hundred eighty million, four hundred twenty-five thousand, eight hundred forty-nine".