449718319925 has 24 divisors (see below), whose sum is σ = 637377496896. Its totient is φ = 308348087040.

The previous prime is 449718319903. The next prime is 449718319969. The reversal of 449718319925 is 529913817944.

It is not a de Polignac number, because 449718319925 - 2¹⁶ = 449718254389 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1746269 + ... + 1987181.

It is an arithmetic number, because the mean of its divisors is an integer number (26557395704).

Almost surely, 2^449718319925 is an apocalyptic number.

It is an amenable number.

449718319925 is a deficient number, since it is larger than the sum of its proper divisors (187659176971).

449718319925 is a wasteful number, since it uses less digits than its factorization.

449718319925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251597 (or 251592 counting only the distinct ones).

The product of its digits is 19595520, while the sum is 62.

The spelling of 449718319925 in words is "four hundred forty-nine billion, seven hundred eighteen million, three hundred nineteen thousand, nine hundred twenty-five".