42244425 has 36 divisors (see below), whose sum is σ = 76137984. Its totient is φ = 22389600.

The previous prime is 42244421. The next prime is 42244453. The reversal of 42244425 is 52444224.

It is not a de Polignac number, because 42244425 - 2² = 42244421 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42244421) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 42484 + ... + 43466.

It is an arithmetic number, because the mean of its divisors is an integer number (2114944).

Almost surely, 2^42244425 is an apocalyptic number.

42244425 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

42244425 is a deficient number, since it is larger than the sum of its proper divisors (33893559).

42244425 is a wasteful number, since it uses less digits than its factorization.

42244425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1190 (or 1182 counting only the distinct ones).

The product of its digits is 10240, while the sum is 27.

The square root of 42244425 is about 6499.5711396984. The cubic root of 42244425 is about 348.2756684125.

Adding to 42244425 its reverse (52444224), we get a palindrome (94688649).

It can be divided in two parts, 4224 and 4425, that added together give a square (8649 = 93²).

The spelling of 42244425 in words is "forty-two million, two hundred forty-four thousand, four hundred twenty-five".