66252425266 has 16 divisors (see below), whose sum is σ = 99822114360. Its totient is φ = 32978534400.

The previous prime is 66252425263. The next prime is 66252425287.

It is a happy number.

66252425266 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 4 ways, for example, as 65367660241 + 884765025 = 255671^2 + 29745^2 .

It is not an unprimeable number, because it can be changed into a prime (66252425263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 889930 + ... + 961498.

Almost surely, 2^66252425266 is an apocalyptic number.

66252425266 is a deficient number, since it is larger than the sum of its proper divisors (33569689094).

66252425266 is a wasteful number, since it uses less digits than its factorization.

66252425266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73629.

The product of its digits is 2073600, while the sum is 46.

The spelling of 66252425266 in words is "sixty-six billion, two hundred fifty-two million, four hundred twenty-five thousand, two hundred sixty-six".