25250042 has 8 divisors (see below), whose sum is σ = 38094516. Its totient is φ = 12551872.

The previous prime is 25250033. The next prime is 25250047. The reversal of 25250042 is 24005252.

It can be written as a sum of positive squares in 2 ways, for example, as 25210441 + 39601 = 5021^2 + 199^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 25249996 and 25250023.

It is not an unprimeable number, because it can be changed into a prime (25250047) 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 3 ways as a sum of consecutive naturals, for example, 36143 + ... + 36834.

Almost surely, 2^25250042 is an apocalyptic number.

25250042 is a deficient number, since it is larger than the sum of its proper divisors (12844474).

25250042 is a wasteful number, since it uses less digits than its factorization.

25250042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73152.

The product of its (nonzero) digits is 800, while the sum is 20.

The square root of 25250042 is about 5024.9419897149. The cubic root of 25250042 is about 293.3733780844.

Adding to 25250042 its reverse (24005252), we get a palindrome (49255294).

The spelling of 25250042 in words is "twenty-five million, two hundred fifty thousand, forty-two".