8255780651 has 2 divisors, whose sum is σ = 8255780652. Its totient is φ = 8255780650.

The previous prime is 8255780647. The next prime is 8255780699. The reversal of 8255780651 is 1560875528.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8255780651 - 2² = 8255780647 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8255780596 and 8255780605.

It is not a weakly prime, because it can be changed into another prime (8255780641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4127890325 + 4127890326.

It is an arithmetic number, because the mean of its divisors is an integer number (4127890326).

Almost surely, 2^8255780651 is an apocalyptic number.

8255780651 is a deficient number, since it is larger than the sum of its proper divisors (1).

8255780651 is an equidigital number, since it uses as much as digits as its factorization.

8255780651 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672000, while the sum is 47.

The square root of 8255780651 is about 90861.3264871254. The cubic root of 8255780651 is about 2021.0918394839.

The spelling of 8255780651 in words is "eight billion, two hundred fifty-five million, seven hundred eighty thousand, six hundred fifty-one".