848529925781 has 2 divisors, whose sum is σ = 848529925782. Its totient is φ = 848529925780.

The previous prime is 848529925703. The next prime is 848529925897. The reversal of 848529925781 is 187529925848.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 675799084900 + 172730840881 = 822070^2 + 415609^2 .

It is a cyclic number.

It is not a de Polignac number, because 848529925781 - 2¹⁰ = 848529924757 is a prime.

It is a super-2 number, since 2×848529925781² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (848529925181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 424264962890 + 424264962891.

It is an arithmetic number, because the mean of its divisors is an integer number (424264962891).

Almost surely, 2^848529925781 is an apocalyptic number.

It is an amenable number.

848529925781 is a deficient number, since it is larger than the sum of its proper divisors (1).

848529925781 is an equidigital number, since it uses as much as digits as its factorization.

848529925781 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 116121600, while the sum is 68.

The spelling of 848529925781 in words is "eight hundred forty-eight billion, five hundred twenty-nine million, nine hundred twenty-five thousand, seven hundred eighty-one".