4278125 has 18 divisors (see below), whose sum is σ = 5495742. Its totient is φ = 3330000.

The previous prime is 4278121. The next prime is 4278133. The reversal of 4278125 is 5218724.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 9 ways, for example, as 3319684 + 958441 = 1822^2 + 979^2 .

It is not a de Polignac number, because 4278125 - 2² = 4278121 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4278121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 115607 + ... + 115643.

It is an arithmetic number, because the mean of its divisors is an integer number (305319).

Almost surely, 2^4278125 is an apocalyptic number.

It is an amenable number.

4278125 is a deficient number, since it is larger than the sum of its proper divisors (1217617).

4278125 is an frugal number, since it uses more digits than its factorization.

4278125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99 (or 42 counting only the distinct ones).

The product of its digits is 4480, while the sum is 29.

The square root of 4278125 is about 2068.3628791873. The cubic root of 4278125 is about 162.3371148899.

The spelling of 4278125 in words is "four million, two hundred seventy-eight thousand, one hundred twenty-five".