25441636342 has 4 divisors (see below), whose sum is σ = 38162454516. Its totient is φ = 12720818170.

The previous prime is 25441636327. The next prime is 25441636343. The reversal of 25441636342 is 24363614452.

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

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 25441636295 and 25441636304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25441636343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6360409084 + ... + 6360409087.

It is an arithmetic number, because the mean of its divisors is an integer number (9540613629).

Almost surely, 2^25441636342 is an apocalyptic number.

25441636342 is a deficient number, since it is larger than the sum of its proper divisors (12720818174).

25441636342 is a wasteful number, since it uses less digits than its factorization.

25441636342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12720818173.

The product of its digits is 414720, while the sum is 40.

The spelling of 25441636342 in words is "twenty-five billion, four hundred forty-one million, six hundred thirty-six thousand, three hundred forty-two".