7256543122 has 4 divisors (see below), whose sum is σ = 10884814686. Its totient is φ = 3628271560.

The previous prime is 7256543039. The next prime is 7256543123. The reversal of 7256543122 is 2213456527.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2213456527 = 2179 ⋅1015813.

It can be written as a sum of positive squares in only one way, i.e., 5536699281 + 1719843841 = 74409^2 + 41471^2 .

It is not an unprimeable number, because it can be changed into a prime (7256543123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1814135779 + ... + 1814135782.

Almost surely, 2^7256543122 is an apocalyptic number.

7256543122 is a deficient number, since it is larger than the sum of its proper divisors (3628271564).

7256543122 is a wasteful number, since it uses less digits than its factorization.

7256543122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3628271563.

The product of its digits is 100800, while the sum is 37.

The square root of 7256543122 is about 85185.3456998327. The cubic root of 7256543122 is about 1936.0203893377.

Adding to 7256543122 its reverse (2213456527), we get a palindrome (9469999649).

The spelling of 7256543122 in words is "seven billion, two hundred fifty-six million, five hundred forty-three thousand, one hundred twenty-two".