75222387289 has 9 divisors (see below), whose sum is σ = 87505826751. Its totient is φ = 64474686360.

The previous prime is 75222387283. The next prime is 75222387299. The reversal of 75222387289 is 98278322257.

The square root of 75222387289 is 274267.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 66606834889 + 8615552400 = 258083^2 + 92820^2 .

It is not a de Polignac number, because 75222387289 - 2⁵ = 75222387257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (75222387283) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1900279 + ... + 1939459.

It is an arithmetic number, because the mean of its divisors is an integer number (9722869639).

Almost surely, 2^75222387289 is an apocalyptic number.

75222387289 is the 274267-th square number.

75222387289 is the 137134-th centered octagonal number.

It is an amenable number.

75222387289 is a deficient number, since it is larger than the sum of its proper divisors (12283439462).

75222387289 is an frugal number, since it uses more digits than its factorization.

75222387289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78376 (or 39188 counting only the distinct ones).

The product of its digits is 6773760, while the sum is 55.

The spelling of 75222387289 in words is "seventy-five billion, two hundred twenty-two million, three hundred eighty-seven thousand, two hundred eighty-nine".