6355805780625 has 80 divisors (see below), whose sum is σ = 12136143191040. Its totient is φ = 2897415720000.

The previous prime is 6355805780579. The next prime is 6355805780629. The reversal of 6355805780625 is 5260875085536.

It is a happy number.

It is not a de Polignac number, because 6355805780625 - 2⁶ = 6355805780561 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6355805780629) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 4037430 + ... + 5386320.

It is an arithmetic number, because the mean of its divisors is an integer number (151701789888).

Almost surely, 2^{6355805780625} is an apocalyptic number.

It is an amenable number.

6355805780625 is a deficient number, since it is larger than the sum of its proper divisors (5780337410415).

6355805780625 is a wasteful number, since it uses less digits than its factorization.

6355805780625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1349280 (or 1349265 counting only the distinct ones).

The product of its (nonzero) digits is 60480000, while the sum is 60.

The spelling of 6355805780625 in words is "six trillion, three hundred fifty-five billion, eight hundred five million, seven hundred eighty thousand, six hundred twenty-five".