42305425 has 6 divisors (see below), whose sum is σ = 52458758. Its totient is φ = 33844320.

The previous prime is 42305423. The next prime is 42305443. The reversal of 42305425 is 52450324.

It can be written as a sum of positive squares in 3 ways, for example, as 263169 + 42042256 = 513^2 + 6484^2 .

It is not a de Polignac number, because 42305425 - 2¹ = 42305423 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 1692217 = 42305425 / (4 + 2 + 3 + 0 + 5 + 4 + 2 + 5).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42305425.

It is not an unprimeable number, because it can be changed into a prime (42305423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 846084 + ... + 846133.

Almost surely, 2^42305425 is an apocalyptic number.

It is an amenable number.

42305425 is a deficient number, since it is larger than the sum of its proper divisors (10153333).

42305425 is a wasteful number, since it uses less digits than its factorization.

42305425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1692227 (or 1692222 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 42305425 is about 6504.2620642160. The cubic root of 42305425 is about 348.4432218691.

Adding to 42305425 its reverse (52450324), we get a palindrome (94755749).

The spelling of 42305425 in words is "forty-two million, three hundred five thousand, four hundred twenty-five".