6428125 has 36 divisors (see below), whose sum is σ = 9350964. Its totient is φ = 4400000.

The previous prime is 6428117. The next prime is 6428131. The reversal of 6428125 is 5218246.

It can be written as a sum of positive squares in 6 ways, for example, as 4507129 + 1920996 = 2123^2 + 1386^2 .

It is not a de Polignac number, because 6428125 - 2³ = 6428117 is a prime.

It is a Duffinian number.

Its product of digits (3840) is a multiple of the sum of its prime factors (64).

It is a junction number, because it is equal to n+sod(n) for n = 6428093 and 6428102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 378117 + ... + 378133.

It is an arithmetic number, because the mean of its divisors is an integer number (259749).

Almost surely, 2^6428125 is an apocalyptic number.

It is an amenable number.

6428125 is a deficient number, since it is larger than the sum of its proper divisors (2922839).

6428125 is an equidigital number, since it uses as much as digits as its factorization.

6428125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64 (or 33 counting only the distinct ones).

The product of its digits is 3840, while the sum is 28.

The square root of 6428125 is about 2535.3747257555. The cubic root of 6428125 is about 185.9351240193.

The spelling of 6428125 in words is "six million, four hundred twenty-eight thousand, one hundred twenty-five".