625009320 has 144 divisors (see below), whose sum is σ = 2199766140. Its totient is φ = 153833472.

The previous prime is 625009303. The next prime is 625009373. The reversal of 625009320 is 23900526.

625009320 is a `hidden beast` number, since 625 + 0 + 0 + 9 + 32 + 0 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 19554084 + 605455236 = 4422^2 + 24606^2 .

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 55704 + ... + 65976.

Almost surely, 2^625009320 is an apocalyptic number.

625009320 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 625009320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1099883070).

625009320 is an abundant number, since it is smaller than the sum of its proper divisors (1574756820).

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

625009320 is a wasteful number, since it uses less digits than its factorization.

625009320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10316 (or 10296 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 625009320 is about 25000.1863993051. The cubic root of 625009320 is about 854.9922231774.

Adding to 625009320 its reverse (23900526), we get a palindrome (648909846).

The spelling of 625009320 in words is "six hundred twenty-five million, nine thousand, three hundred twenty".