83725105169 has 2 divisors, whose sum is σ = 83725105170. Its totient is φ = 83725105168.

The previous prime is 83725105159. The next prime is 83725105223. The reversal of 83725105169 is 96150152738.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61861638400 + 21863466769 = 248720^2 + 147863^2 .

It is a cyclic number.

It is not a de Polignac number, because 83725105169 - 2⁸ = 83725104913 is a prime.

It is a super-2 number, since 2×83725105169² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (83725105159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41862552584 + 41862552585.

It is an arithmetic number, because the mean of its divisors is an integer number (41862552585).

Almost surely, 2^83725105169 is an apocalyptic number.

It is an amenable number.

83725105169 is a deficient number, since it is larger than the sum of its proper divisors (1).

83725105169 is an equidigital number, since it uses as much as digits as its factorization.

83725105169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 453600, while the sum is 47.

The spelling of 83725105169 in words is "eighty-three billion, seven hundred twenty-five million, one hundred five thousand, one hundred sixty-nine".