722505294720 has 512 divisors, whose sum is σ = 2887778304000. Its totient is φ = 169111756800.

The previous prime is 722505294703. The next prime is 722505294733. The reversal of 722505294720 is 27492505227.

722505294720 is a `hidden beast` number, since 7 + 2 + 2 + 50 + 529 + 4 + 72 + 0 = 666.

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 pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5446785 + ... + 5577855.

It is an arithmetic number, because the mean of its divisors is an integer number (5640192000).

Almost surely, 2^722505294720 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 722505294720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1443889152000).

722505294720 is an abundant number, since it is smaller than the sum of its proper divisors (2165273009280).

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

722505294720 is a wasteful number, since it uses less digits than its factorization.

722505294720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131139 (or 131121 counting only the distinct ones).

The product of its (nonzero) digits is 705600, while the sum is 45.

Adding to 722505294720 its reverse (27492505227), we get a palindrome (749997799947).

The spelling of 722505294720 in words is "seven hundred twenty-two billion, five hundred five million, two hundred ninety-four thousand, seven hundred twenty".