8425818133 has 2 divisors, whose sum is σ = 8425818134. Its totient is φ = 8425818132.

The previous prime is 8425818113. The next prime is 8425818139. The reversal of 8425818133 is 3318185248.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8255176164 + 170641969 = 90858^2 + 13063^2 .

It is a cyclic number.

It is not a de Polignac number, because 8425818133 - 2⁵ = 8425818101 is a prime.

It is a super-2 number, since 2×8425818133² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 8425818133.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8425818139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4212909066 + 4212909067.

It is an arithmetic number, because the mean of its divisors is an integer number (4212909067).

Almost surely, 2^8425818133 is an apocalyptic number.

It is an amenable number.

8425818133 is a deficient number, since it is larger than the sum of its proper divisors (1).

8425818133 is an equidigital number, since it uses as much as digits as its factorization.

8425818133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 184320, while the sum is 43.

The square root of 8425818133 is about 91792.2552996711. The cubic root of 8425818133 is about 2034.8732387884.

The spelling of 8425818133 in words is "eight billion, four hundred twenty-five million, eight hundred eighteen thousand, one hundred thirty-three".