8780725867 has 2 divisors, whose sum is σ = 8780725868. Its totient is φ = 8780725866.

The previous prime is 8780725841. The next prime is 8780725901. The reversal of 8780725867 is 7685270878.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8780725867 is a prime.

It is a super-2 number, since 2×8780725867² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8780725367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4390362933 + 4390362934.

It is an arithmetic number, because the mean of its divisors is an integer number (4390362934).

Almost surely, 2^8780725867 is an apocalyptic number.

8780725867 is a deficient number, since it is larger than the sum of its proper divisors (1).

8780725867 is an equidigital number, since it uses as much as digits as its factorization.

8780725867 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10536960, while the sum is 58.

The square root of 8780725867 is about 93705.5274090061. The cubic root of 8780725867 is about 2063.0518333484.

The spelling of 8780725867 in words is "eight billion, seven hundred eighty million, seven hundred twenty-five thousand, eight hundred sixty-seven".