65552825557 has 16 divisors (see below), whose sum is σ = 66720407040. Its totient is φ = 64394975232.

The previous prime is 65552825551. The next prime is 65552825561. The reversal of 65552825557 is 75552825556.

65552825557 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 65552825557 - 2³ = 65552825549 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 65552825498 and 65552825507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65552825551) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20895093 + ... + 20898229.

It is an arithmetic number, because the mean of its divisors is an integer number (4170025440).

Almost surely, 2^65552825557 is an apocalyptic number.

It is an amenable number.

65552825557 is a deficient number, since it is larger than the sum of its proper divisors (1167581483).

65552825557 is a wasteful number, since it uses less digits than its factorization.

65552825557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4572.

The product of its digits is 21000000, while the sum is 55.

Subtracting 65552825557 from its reverse (75552825556), we obtain a palindrome (9999999999).

The spelling of 65552825557 in words is "sixty-five billion, five hundred fifty-two million, eight hundred twenty-five thousand, five hundred fifty-seven".