4449725280 has 1200 divisors, whose sum is σ = 21522839184. Its totient is φ = 853493760.

The previous prime is 4449725279. The next prime is 4449725321. The reversal of 4449725280 is 825279444.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 199 ways as a sum of consecutive naturals, for example, 342286554 + ... + 342286566.

Almost surely, 2^4449725280 is an apocalyptic number.

4449725280 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4449725280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10761419592).

4449725280 is an abundant number, since it is smaller than the sum of its proper divisors (17073113904).

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

4449725280 is a wasteful number, since it uses less digits than its factorization.

4449725280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79 (or 41 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 45.

The square root of 4449725280 is about 66706.2611753949. The cubic root of 4449725280 is about 1644.7923081683.

The spelling of 4449725280 in words is "four billion, four hundred forty-nine million, seven hundred twenty-five thousand, two hundred eighty".