4278725 has 12 divisors (see below), whose sum is σ = 5788320. Its totient is φ = 3111600.

The previous prime is 4278709. The next prime is 4278731. The reversal of 4278725 is 5278724.

It is not a de Polignac number, because 4278725 - 2⁴ = 4278709 is a prime.

It is a d-powerful number, because it can be written as 4 + 2¹⁶ + 7³ + 8³ + 7⁴ + 2²² + 5⁶ .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7505 + ... + 8054.

It is an arithmetic number, because the mean of its divisors is an integer number (482360).

Almost surely, 2^4278725 is an apocalyptic number.

It is an amenable number.

4278725 is a deficient number, since it is larger than the sum of its proper divisors (1509595).

4278725 is a wasteful number, since it uses less digits than its factorization.

4278725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15580 (or 15575 counting only the distinct ones).

The product of its digits is 31360, while the sum is 35.

The square root of 4278725 is about 2068.5079163494. The cubic root of 4278725 is about 162.3447037064.

Subtracting 4278725 from its reverse (5278724), we obtain a palindrome (999999).

The spelling of 4278725 in words is "four million, two hundred seventy-eight thousand, seven hundred twenty-five".