681072653225 has 12 divisors (see below), whose sum is σ = 845382320640. Its totient is φ = 544308296400.

The previous prime is 681072653161. The next prime is 681072653237. The reversal of 681072653225 is 522356270186.

It is not a de Polignac number, because 681072653225 - 2⁶ = 681072653161 is a prime.

It is a super-2 number, since 2×681072653225² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 681072653225.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13720385 + ... + 13769934.

It is an arithmetic number, because the mean of its divisors is an integer number (70448526720).

Almost surely, 2^681072653225 is an apocalyptic number.

It is an amenable number.

681072653225 is a deficient number, since it is larger than the sum of its proper divisors (164309667415).

681072653225 is a wasteful number, since it uses less digits than its factorization.

681072653225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27491320 (or 27491315 counting only the distinct ones).

The product of its (nonzero) digits is 1209600, while the sum is 47.

The spelling of 681072653225 in words is "six hundred eighty-one billion, seventy-two million, six hundred fifty-three thousand, two hundred twenty-five".