4244425 has 6 divisors (see below), whose sum is σ = 5263118. Its totient is φ = 3395520.

The previous prime is 4244423. The next prime is 4244431. The reversal of 4244425 is 5244424.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 788544 + 3455881 = 888^2 + 1859^2 .

It is not a de Polignac number, because 4244425 - 2¹ = 4244423 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 169777 = 4244425 / (4 + 2 + 4 + 4 + 4 + 2 + 5).

It is a Duffinian number.

4244425 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 4244425.

It is not an unprimeable number, because it can be changed into a prime (4244423) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 84864 + ... + 84913.

Almost surely, 2^4244425 is an apocalyptic number.

It is an amenable number.

4244425 is a deficient number, since it is larger than the sum of its proper divisors (1018693).

4244425 is a wasteful number, since it uses less digits than its factorization.

4244425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169787 (or 169782 counting only the distinct ones).

The product of its digits is 5120, while the sum is 25.

The square root of 4244425 is about 2060.2002329871. The cubic root of 4244425 is about 161.9097322649.

Adding to 4244425 its reverse (5244424), we get a palindrome (9488849).

Subtracting 4244425 from its reverse (5244424), we obtain a palindrome (999999).

The spelling of 4244425 in words is "four million, two hundred forty-four thousand, four hundred twenty-five".