673225520 has 80 divisors (see below), whose sum is σ = 1713104640. Its totient is φ = 244012800.

The previous prime is 673225513. The next prime is 673225523. The reversal of 673225520 is 25522376.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (673225523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 314855 + ... + 316985.

It is an arithmetic number, because the mean of its divisors is an integer number (21413808).

Almost surely, 2^673225520 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 673225520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (856552320).

673225520 is an abundant number, since it is smaller than the sum of its proper divisors (1039879120).

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

673225520 is a wasteful number, since it uses less digits than its factorization.

673225520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2514 (or 2508 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 32.

The square root of 673225520 is about 25946.5897566520. The cubic root of 673225520 is about 876.4359637813.

Adding to 673225520 its reverse (25522376), we get a palindrome (698747896).

The spelling of 673225520 in words is "six hundred seventy-three million, two hundred twenty-five thousand, five hundred twenty".