681308420025 has 12 divisors (see below), whose sum is σ = 1126429921232. Its totient is φ = 363364490640.

The previous prime is 681308419999. The next prime is 681308420029. The reversal of 681308420025 is 520024803186.

It is not a de Polignac number, because 681308420025 - 2⁵ = 681308419993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (681308420029) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4542056059 + ... + 4542056208.

Almost surely, 2^681308420025 is an apocalyptic number.

It is an amenable number.

681308420025 is a deficient number, since it is larger than the sum of its proper divisors (445121501207).

681308420025 is a wasteful number, since it uses less digits than its factorization.

681308420025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9084112280 (or 9084112275 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 39.

The spelling of 681308420025 in words is "six hundred eighty-one billion, three hundred eight million, four hundred twenty thousand, twenty-five".