65525544425 has 36 divisors (see below), whose sum is σ = 89348114688. Its totient is φ = 47634444000.

The previous prime is 65525544407. The next prime is 65525544479. The reversal of 65525544425 is 52444552556.

65525544425 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 65525544425 - 2¹² = 65525540329 is a prime.

It is a super-3 number, since 3×65525544425³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 65525544425.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 13449740 + ... + 13454610.

Almost surely, 2^65525544425 is an apocalyptic number.

It is an amenable number.

65525544425 is a deficient number, since it is larger than the sum of its proper divisors (23822570263).

65525544425 is a wasteful number, since it uses less digits than its factorization.

65525544425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9350 (or 9334 counting only the distinct ones).

The product of its digits is 4800000, while the sum is 47.

The spelling of 65525544425 in words is "sixty-five billion, five hundred twenty-five million, five hundred forty-four thousand, four hundred twenty-five".