42525444 has 48 divisors (see below), whose sum is σ = 107956800. Its totient is φ = 12950400.

The previous prime is 42525443. The next prime is 42525481. The reversal of 42525444 is 44452524.

It is not an unprimeable number, because it can be changed into a prime (42525443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14407 + ... + 17105.

It is an arithmetic number, because the mean of its divisors is an integer number (2249100).

Almost surely, 2^42525444 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42525444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53978400).

42525444 is an abundant number, since it is smaller than the sum of its proper divisors (65431356).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42525444 is a wasteful number, since it uses less digits than its factorization.

42525444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2820 (or 2818 counting only the distinct ones).

The product of its digits is 25600, while the sum is 30.

The square root of 42525444 is about 6521.1535789306. The cubic root of 42525444 is about 349.0462304967.

Adding to 42525444 its reverse (44452524), we get a palindrome (86977968).

The spelling of 42525444 in words is "forty-two million, five hundred twenty-five thousand, four hundred forty-four".