25205042 has 4 divisors (see below), whose sum is σ = 37807566. Its totient is φ = 12602520.

The previous prime is 25205041. The next prime is 25205053. The reversal of 25205042 is 24050252.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 14830201 + 10374841 = 3851^2 + 3221^2 .

It is not an unprimeable number, because it can be changed into a prime (25205041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6301259 + ... + 6301262.

Almost surely, 2^25205042 is an apocalyptic number.

25205042 is a deficient number, since it is larger than the sum of its proper divisors (12602524).

25205042 is a wasteful number, since it uses less digits than its factorization.

25205042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12602523.

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

The square root of 25205042 is about 5020.4623293079. The cubic root of 25205042 is about 293.1989935239.

Adding to 25205042 its reverse (24050252), we get a palindrome (49255294).

The spelling of 25205042 in words is "twenty-five million, two hundred five thousand, forty-two".