42025564 has 24 divisors (see below), whose sum is σ = 88996320. Its totient is φ = 16951296.

The previous prime is 42025561. The next prime is 42025573. The reversal of 42025564 is 46552024.

42025564 = 487² + 488² + ... + 622².

It is a super-2 number, since 2×42025564² = 3532296059036192, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42025561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43669 + ... + 44620.

It is an arithmetic number, because the mean of its divisors is an integer number (3708180).

Almost surely, 2^42025564 is an apocalyptic number.

It is an amenable number.

42025564 is an abundant number, since it is smaller than the sum of its proper divisors (46970756).

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

42025564 is a wasteful number, since it uses less digits than its factorization.

42025564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88317 (or 88315 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 42025564 is about 6482.7127037992. The cubic root of 42025564 is about 347.6731749032.

Adding to 42025564 its reverse (46552024), we get a palindrome (88577588).

The spelling of 42025564 in words is "forty-two million, twenty-five thousand, five hundred sixty-four".