25315842 has 16 divisors (see below), whose sum is σ = 51081120. Its totient is φ = 8363712.

The previous prime is 25315841. The next prime is 25315909. The reversal of 25315842 is 24851352.

It is not an unprimeable number, because it can be changed into a prime (25315841) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 17992 + ... + 19347.

It is an arithmetic number, because the mean of its divisors is an integer number (3192570).

Almost surely, 2^25315842 is an apocalyptic number.

25315842 is an abundant number, since it is smaller than the sum of its proper divisors (25765278).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25315842 is a wasteful number, since it uses less digits than its factorization.

25315842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37457.

The product of its digits is 9600, while the sum is 30.

The square root of 25315842 is about 5031.4850690427. The cubic root of 25315842 is about 293.6279944821.

The spelling of 25315842 in words is "twenty-five million, three hundred fifteen thousand, eight hundred forty-two".