7776666325 has 24 divisors (see below), whose sum is σ = 9800372736. Its totient is φ = 6120480000.

The previous prime is 7776666323. The next prime is 7776666341. The reversal of 7776666325 is 5236666777.

It is a happy number.

It is not a de Polignac number, because 7776666325 - 2¹ = 7776666323 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7776666323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 492300 + ... + 507850.

It is an arithmetic number, because the mean of its divisors is an integer number (408348864).

Almost surely, 2^7776666325 is an apocalyptic number.

It is an amenable number.

7776666325 is a deficient number, since it is larger than the sum of its proper divisors (2023706411).

7776666325 is a wasteful number, since it uses less digits than its factorization.

7776666325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15885 (or 15880 counting only the distinct ones).

The product of its digits is 13335840, while the sum is 55.

The square root of 7776666325 is about 88185.4087987350. The cubic root of 7776666325 is about 1981.2129361123.

The spelling of 7776666325 in words is "seven billion, seven hundred seventy-six million, six hundred sixty-six thousand, three hundred twenty-five".