42530825 has 6 divisors (see below), whose sum is σ = 52738254. Its totient is φ = 34024640.

The previous prime is 42530809. The next prime is 42530833. The reversal of 42530825 is 52803524.

It can be written as a sum of positive squares in 3 ways, for example, as 59536 + 42471289 = 244^2 + 6517^2 .

It is not a de Polignac number, because 42530825 - 2⁴ = 42530809 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 850592 + ... + 850641.

It is an arithmetic number, because the mean of its divisors is an integer number (8789709).

Almost surely, 2^42530825 is an apocalyptic number.

It is an amenable number.

42530825 is a deficient number, since it is larger than the sum of its proper divisors (10207429).

42530825 is a wasteful number, since it uses less digits than its factorization.

42530825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1701243 (or 1701238 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 42530825 is about 6521.5661462566. The cubic root of 42530825 is about 349.0609521815.

The spelling of 42530825 in words is "forty-two million, five hundred thirty thousand, eight hundred twenty-five".