8254742533 has 2 divisors, whose sum is σ = 8254742534. Its totient is φ = 8254742532.

The previous prime is 8254742491. The next prime is 8254742537. The reversal of 8254742533 is 3352474528.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4266441124 + 3988301409 = 65318^2 + 63153^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8254742533 is a prime.

It is a super-2 number, since 2×8254742533² (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 8254742533.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8254742537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4127371266 + 4127371267.

It is an arithmetic number, because the mean of its divisors is an integer number (4127371267).

Almost surely, 2^8254742533 is an apocalyptic number.

It is an amenable number.

8254742533 is a deficient number, since it is larger than the sum of its proper divisors (1).

8254742533 is an equidigital number, since it uses as much as digits as its factorization.

8254742533 is an evil number, because the sum of its binary digits is even.

The product of its digits is 806400, while the sum is 43.

The square root of 8254742533 is about 90855.6136570548. The cubic root of 8254742533 is about 2021.0071222878.

The spelling of 8254742533 in words is "eight billion, two hundred fifty-four million, seven hundred forty-two thousand, five hundred thirty-three".