25217042 has 8 divisors (see below), whose sum is σ = 38102076. Its totient is φ = 12516352.

The previous prime is 25217021. The next prime is 25217053. The reversal of 25217042 is 24071252.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 22458121 + 2758921 = 4739^2 + 1661^2 .

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 = 25216999 and 25217017.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45743 + ... + 46290.

Almost surely, 2^25217042 is an apocalyptic number.

25217042 is a deficient number, since it is larger than the sum of its proper divisors (12885034).

25217042 is a wasteful number, since it uses less digits than its factorization.

25217042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92172.

The product of its (nonzero) digits is 1120, while the sum is 23.

The square root of 25217042 is about 5021.6572961523. The cubic root of 25217042 is about 293.2455163547.

Adding to 25217042 its reverse (24071252), we get a palindrome (49288294).

The spelling of 25217042 in words is "twenty-five million, two hundred seventeen thousand, forty-two".