681422272325 has 6 divisors (see below), whose sum is σ = 844963617714. Its totient is φ = 545137817840.

The previous prime is 681422272319. The next prime is 681422272361. The reversal of 681422272325 is 523272224186.

It can be written as a sum of positive squares in 3 ways, for example, as 103726508356 + 577695763969 = 322066^2 + 760063^2 .

It is not a de Polignac number, because 681422272325 - 2³⁴ = 664242403141 is a prime.

It is a super-3 number, since 3×681422272325³ (a number of 36 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13628445422 + ... + 13628445471.

It is an arithmetic number, because the mean of its divisors is an integer number (140827269619).

Almost surely, 2^681422272325 is an apocalyptic number.

It is an amenable number.

681422272325 is a deficient number, since it is larger than the sum of its proper divisors (163541345389).

681422272325 is a wasteful number, since it uses less digits than its factorization.

681422272325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27256890903 (or 27256890898 counting only the distinct ones).

The product of its digits is 645120, while the sum is 44.

The spelling of 681422272325 in words is "six hundred eighty-one billion, four hundred twenty-two million, two hundred seventy-two thousand, three hundred twenty-five".