25439342 has 4 divisors (see below), whose sum is σ = 38159016. Its totient is φ = 12719670.

The previous prime is 25439341. The next prime is 25439383. The reversal of 25439342 is 24393452.

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

It is a junction number, because it is equal to n+sod(n) for n = 25439299 and 25439308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25439341) 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 as a sum of consecutive naturals, namely, 6359834 + ... + 6359837.

It is an arithmetic number, because the mean of its divisors is an integer number (9539754).

Almost surely, 2^25439342 is an apocalyptic number.

25439342 is a deficient number, since it is larger than the sum of its proper divisors (12719674).

25439342 is a wasteful number, since it uses less digits than its factorization.

25439342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12719673.

The product of its digits is 25920, while the sum is 32.

The square root of 25439342 is about 5043.7428562527. The cubic root of 25439342 is about 294.1046953089.

The spelling of 25439342 in words is "twenty-five million, four hundred thirty-nine thousand, three hundred forty-two".