8425010861 has 2 divisors, whose sum is σ = 8425010862. Its totient is φ = 8425010860.

The previous prime is 8425010843. The next prime is 8425010863. The reversal of 8425010861 is 1680105248.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7213274761 + 1211736100 = 84931^2 + 34810^2 .

It is a cyclic number.

It is not a de Polignac number, because 8425010861 - 2¹⁰ = 8425009837 is a prime.

It is a super-2 number, since 2×8425010861² (a number of 21 digits) contains 22 as substring.

Together with 8425010863, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8425010863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4212505430 + 4212505431.

It is an arithmetic number, because the mean of its divisors is an integer number (4212505431).

Almost surely, 2^8425010861 is an apocalyptic number.

It is an amenable number.

8425010861 is a deficient number, since it is larger than the sum of its proper divisors (1).

8425010861 is an equidigital number, since it uses as much as digits as its factorization.

8425010861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15360, while the sum is 35.

The square root of 8425010861 is about 91787.8579170470. The cubic root of 8425010861 is about 2034.8082500982.

The spelling of 8425010861 in words is "eight billion, four hundred twenty-five million, ten thousand, eight hundred sixty-one".