76681909925 has 12 divisors (see below), whose sum is σ = 95089290756. Its totient is φ = 61343126400.

The previous prime is 76681909919. The next prime is 76681909937. The reversal of 76681909925 is 52990918667.

It can be written as a sum of positive squares in 6 ways, for example, as 804800161 + 75877109764 = 28369^2 + 275458^2 .

It is not a de Polignac number, because 76681909925 - 2⁸ = 76681909669 is a prime.

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 11 ways as a sum of consecutive naturals, for example, 879815 + ... + 963035.

It is an arithmetic number, because the mean of its divisors is an integer number (7924107563).

Almost surely, 2^76681909925 is an apocalyptic number.

It is an amenable number.

76681909925 is a deficient number, since it is larger than the sum of its proper divisors (18407380831).

76681909925 is a wasteful number, since it uses less digits than its factorization.

76681909925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120088 (or 120083 counting only the distinct ones).

The product of its (nonzero) digits is 14696640, while the sum is 62.

The spelling of 76681909925 in words is "seventy-six billion, six hundred eighty-one million, nine hundred nine thousand, nine hundred twenty-five".