4428725 has 12 divisors (see below), whose sum is σ = 6276384. Its totient is φ = 3036720.

The previous prime is 4428713. The next prime is 4428737. The reversal of 4428725 is 5278244.

It is an interprime number because it is at equal distance from previous prime (4428713) and next prime (4428737).

It is not a de Polignac number, because 4428725 - 2⁴ = 4428709 is a prime.

It is a super-2 number, since 2×4428725² = 39227210251250, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 4428691 and 4428700.

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, 12479 + ... + 12828.

It is an arithmetic number, because the mean of its divisors is an integer number (523032).

Almost surely, 2^4428725 is an apocalyptic number.

It is an amenable number.

4428725 is a deficient number, since it is larger than the sum of its proper divisors (1847659).

4428725 is a wasteful number, since it uses less digits than its factorization.

4428725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25324 (or 25319 counting only the distinct ones).

The product of its digits is 17920, while the sum is 32.

The square root of 4428725 is about 2104.4536107978. The cubic root of 4428725 is about 164.2200718939.

The spelling of 4428725 in words is "four million, four hundred twenty-eight thousand, seven hundred twenty-five".