8025775779 has 16 divisors (see below), whose sum is σ = 12761482752. Its totient is φ = 4386759168.

The previous prime is 8025775763. The next prime is 8025775799. The reversal of 8025775779 is 9775775208.

It is not a de Polignac number, because 8025775779 - 2⁴ = 8025775763 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8025775729) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8307774 + ... + 8308739.

It is an arithmetic number, because the mean of its divisors is an integer number (797592672).

Almost surely, 2^8025775779 is an apocalyptic number.

8025775779 is a deficient number, since it is larger than the sum of its proper divisors (4735706973).

8025775779 is a wasteful number, since it uses less digits than its factorization.

8025775779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16616546.

The product of its (nonzero) digits is 8643600, while the sum is 57.

The square root of 8025775779 is about 89586.6942073431. The cubic root of 8025775779 is about 2002.1456787914.

It can be divided in two parts, 802577 and 5779, that added together give a triangular number (808356 = T₁₂₇₁).

The spelling of 8025775779 in words is "eight billion, twenty-five million, seven hundred seventy-five thousand, seven hundred seventy-nine".