625021320 has 512 divisors, whose sum is σ = 2597806080. Its totient is φ = 116244480.

The previous prime is 625021289. The next prime is 625021339. The reversal of 625021320 is 23120526.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 3612754 + ... + 3612926.

It is an arithmetic number, because the mean of its divisors is an integer number (5073840).

Almost surely, 2^625021320 is an apocalyptic number.

625021320 is a gapful number since it is divisible by the number (60) 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 625021320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1298903040).

625021320 is an abundant number, since it is smaller than the sum of its proper divisors (1972784760).

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

625021320 is a wasteful number, since it uses less digits than its factorization.

625021320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245 (or 241 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 625021320 is about 25000.4263963637. The cubic root of 625021320 is about 854.9976950111.

Adding to 625021320 its reverse (23120526), we get a palindrome (648141846).

The spelling of 625021320 in words is "six hundred twenty-five million, twenty-one thousand, three hundred twenty".