2143225 has 24 divisors (see below), whose sum is σ = 3128768. Its totient is φ = 1425600.

The previous prime is 2143223. The next prime is 2143231. The reversal of 2143225 is 5223412.

It is not a de Polignac number, because 2143225 - 2¹ = 2143223 is a prime.

It is a d-powerful number, because it can be written as 2⁵ + 1 + 4⁷ + 3¹³ + 2¹³ + 2¹⁹ + 5 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2143223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6310 + ... + 6640.

2^2143225 is an apocalyptic number.

2143225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2143225 is a deficient number, since it is larger than the sum of its proper divisors (985543).

2143225 is a wasteful number, since it uses less digits than its factorization.

2143225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385 (or 380 counting only the distinct ones).

The product of its digits is 480, while the sum is 19.

The square root of 2143225 is about 1463.9757511653. The cubic root of 2143225 is about 128.9305757888.

Adding to 2143225 its reverse (5223412), we get a palindrome (7366637).

The spelling of 2143225 in words is "two million, one hundred forty-three thousand, two hundred twenty-five".