2198125 has 10 divisors (see below), whose sum is σ = 2747558. Its totient is φ = 1758000.

The previous prime is 2198093. The next prime is 2198137. The reversal of 2198125 is 5218912.

It can be written as a sum of positive squares in 5 ways, for example, as 310249 + 1887876 = 557^2 + 1374^2 .

It is not a de Polignac number, because 2198125 - 2⁵ = 2198093 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2198093 and 2198102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1134 + ... + 2383.

2^2198125 is an apocalyptic number.

2198125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2198125 is a deficient number, since it is larger than the sum of its proper divisors (549433).

2198125 is an frugal number, since it uses more digits than its factorization.

2198125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3537 (or 3522 counting only the distinct ones).

The product of its digits is 1440, while the sum is 28.

The square root of 2198125 is about 1482.6075003183. The cubic root of 2198125 is about 130.0221855627.

The spelling of 2198125 in words is "two million, one hundred ninety-eight thousand, one hundred twenty-five".