6642256506325 has 48 divisors (see below), whose sum is σ = 9034065211392. Its totient is φ = 4804450200000.

The previous prime is 6642256506313. The next prime is 6642256506341. The reversal of 6642256506325 is 5236056522466.

It is not a de Polignac number, because 6642256506325 - 2²¹ = 6642254409173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 338828974 + ... + 338848576.

It is an arithmetic number, because the mean of its divisors is an integer number (188209691904).

Almost surely, 2^{6642256506325} is an apocalyptic number.

It is an amenable number.

6642256506325 is a deficient number, since it is larger than the sum of its proper divisors (2391808705067).

6642256506325 is a wasteful number, since it uses less digits than its factorization.

6642256506325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26266 (or 26261 counting only the distinct ones).

The product of its (nonzero) digits is 15552000, while the sum is 52.

The spelling of 6642256506325 in words is "six trillion, six hundred forty-two billion, two hundred fifty-six million, five hundred six thousand, three hundred twenty-five".