6225556043557 has 4 divisors (see below), whose sum is σ = 6225580888780. Its totient is φ = 6225531198336.

The previous prime is 6225556043549. The next prime is 6225556043563. The reversal of 6225556043557 is 7553406555226.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3298996546596 + 2926559496961 = 1816314^2 + 1710719^2 .

It is a cyclic number.

It is not a de Polignac number, because 6225556043557 - 2³ = 6225556043549 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6225556043498 and 6225556043507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6225556041557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12042882 + ... + 12549187.

It is an arithmetic number, because the mean of its divisors is an integer number (1556395222195).

Almost surely, 2^{6225556043557} is an apocalyptic number.

It is an amenable number.

6225556043557 is a deficient number, since it is larger than the sum of its proper divisors (24845223).

6225556043557 is a wasteful number, since it uses less digits than its factorization.

6225556043557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24845222.

The product of its (nonzero) digits is 37800000, while the sum is 55.

The spelling of 6225556043557 in words is "six trillion, two hundred twenty-five billion, five hundred fifty-six million, forty-three thousand, five hundred fifty-seven".