825318210667 has 2 divisors, whose sum is σ = 825318210668. Its totient is φ = 825318210666.

The previous prime is 825318210653. The next prime is 825318210679. The reversal of 825318210667 is 766012813528.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-825318210667 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 825318210667.

It is not a weakly prime, because it can be changed into another prime (825318210467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 412659105333 + 412659105334.

It is an arithmetic number, because the mean of its divisors is an integer number (412659105334).

Almost surely, 2^825318210667 is an apocalyptic number.

825318210667 is a deficient number, since it is larger than the sum of its proper divisors (1).

825318210667 is an equidigital number, since it uses as much as digits as its factorization.

825318210667 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 967680, while the sum is 49.

The spelling of 825318210667 in words is "eight hundred twenty-five billion, three hundred eighteen million, two hundred ten thousand, six hundred sixty-seven".