6428946907225 has 48 divisors (see below), whose sum is σ = 8109725944320. Its totient is φ = 5054882976000.

The previous prime is 6428946907183. The next prime is 6428946907237. The reversal of 6428946907225 is 5227096498246.

It is not a de Polignac number, because 6428946907225 - 2¹³ = 6428946899033 is a prime.

It is a Smith number, since the sum of its digits (64) coincides with the sum of the digits of its prime factors.

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, 394381575 + ... + 394397875.

It is an arithmetic number, because the mean of its divisors is an integer number (168952623840).

Almost surely, 2^{6428946907225} is an apocalyptic number.

It is an amenable number.

6428946907225 is a deficient number, since it is larger than the sum of its proper divisors (1680779037095).

6428946907225 is a wasteful number, since it uses less digits than its factorization.

6428946907225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17290 (or 17285 counting only the distinct ones).

The product of its (nonzero) digits is 104509440, while the sum is 64.

The spelling of 6428946907225 in words is "six trillion, four hundred twenty-eight billion, nine hundred forty-six million, nine hundred seven thousand, two hundred twenty-five".