2199025 has 6 divisors (see below), whose sum is σ = 2726822. Its totient is φ = 1759200.

The previous prime is 2198981. The next prime is 2199061. The reversal of 2199025 is 5209912.

2199025 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 20449 + 2178576 = 143^2 + 1476^2 .

It is not a de Polignac number, because 2199025 - 2⁷ = 2198897 is a prime.

It is a Duffinian number.

2199025 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2198984 and 2199002.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 43956 + ... + 44005.

2^2199025 is an apocalyptic number.

2199025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2199025 is a deficient number, since it is larger than the sum of its proper divisors (527797).

2199025 is an equidigital number, since it uses as much as digits as its factorization.

2199025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87971 (or 87966 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 28.

The square root of 2199025 is about 1482.9109885627. The cubic root of 2199025 is about 130.0399285634.

The spelling of 2199025 in words is "two million, one hundred ninety-nine thousand, twenty-five".