25449706118 has 4 divisors (see below), whose sum is σ = 38174559180. Its totient is φ = 12724853058.

The previous prime is 25449706081. The next prime is 25449706151. The reversal of 25449706118 is 81160794452.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6362426528 + ... + 6362426531.

It is an arithmetic number, because the mean of its divisors is an integer number (9543639795).

Almost surely, 2^25449706118 is an apocalyptic number.

25449706118 is a deficient number, since it is larger than the sum of its proper divisors (12724853062).

25449706118 is a wasteful number, since it uses less digits than its factorization.

25449706118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12724853061.

The product of its (nonzero) digits is 483840, while the sum is 47.

The spelling of 25449706118 in words is "twenty-five billion, four hundred forty-nine million, seven hundred six thousand, one hundred eighteen".