65225546644 has 12 divisors (see below), whose sum is σ = 117229698964. Its totient is φ = 31731346944.

The previous prime is 65225546627. The next prime is 65225546653. The reversal of 65225546644 is 44664552256.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 52710649744 + 12514896900 = 229588^2 + 111870^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 220356429 + ... + 220356724.

Almost surely, 2^65225546644 is an apocalyptic number.

It is an amenable number.

65225546644 is a deficient number, since it is larger than the sum of its proper divisors (52004152320).

65225546644 is a wasteful number, since it uses less digits than its factorization.

65225546644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440713194 (or 440713192 counting only the distinct ones).

The product of its digits is 6912000, while the sum is 49.

The spelling of 65225546644 in words is "sixty-five billion, two hundred twenty-five million, five hundred forty-six thousand, six hundred forty-four".