2228725 has 12 divisors (see below), whose sum is σ = 2812320. Its totient is φ = 1751600.

The previous prime is 2228713. The next prime is 2228731. The reversal of 2228725 is 5278222.

It is not a de Polignac number, because 2228725 - 2¹⁷ = 2097653 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2228693 and 2228702.

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, 720 + ... + 2230.

It is an arithmetic number, because the mean of its divisors is an integer number (234360).

2^2228725 is an apocalyptic number.

2228725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2228725 is a deficient number, since it is larger than the sum of its proper divisors (583595).

2228725 is a wasteful number, since it uses less digits than its factorization.

2228725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1580 (or 1575 counting only the distinct ones).

The product of its digits is 4480, while the sum is 28.

The square root of 2228725 is about 1492.8914896937. The cubic root of 2228725 is about 130.6227516535.

The spelling of 2228725 in words is "two million, two hundred twenty-eight thousand, seven hundred twenty-five".