42305525 has 6 divisors (see below), whose sum is σ = 52458882. Its totient is φ = 33844400.

The previous prime is 42305491. The next prime is 42305531. The reversal of 42305525 is 52550324.

It can be written as a sum of positive squares in 3 ways, for example, as 2337841 + 39967684 = 1529^2 + 6322^2 .

It is a de Polignac number, because none of the positive numbers 2^k-42305525 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42305494 and 42305503.

It is a congruent 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, 846086 + ... + 846135.

It is an arithmetic number, because the mean of its divisors is an integer number (8743147).

Almost surely, 2^42305525 is an apocalyptic number.

It is an amenable number.

42305525 is a deficient number, since it is larger than the sum of its proper divisors (10153357).

42305525 is a wasteful number, since it uses less digits than its factorization.

42305525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1692231 (or 1692226 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 26.

The square root of 42305525 is about 6504.2697514786. The cubic root of 42305525 is about 348.4434964146.

Adding to 42305525 its reverse (52550324), we get a palindrome (94855849).

The spelling of 42305525 in words is "forty-two million, three hundred five thousand, five hundred twenty-five".