625505220 has 96 divisors (see below), whose sum is σ = 1964054400. Its totient is φ = 165255552.

The previous prime is 625505203. The next prime is 625505227. The reversal of 625505220 is 22505526.

625505220 is a `hidden beast` number, since 62 + 550 + 52 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (625505227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 53547 + ... + 64173.

It is an arithmetic number, because the mean of its divisors is an integer number (20458900).

Almost surely, 2^625505220 is an apocalyptic number.

625505220 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 625505220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (982027200).

625505220 is an abundant number, since it is smaller than the sum of its proper divisors (1338549180).

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

625505220 is a wasteful number, since it uses less digits than its factorization.

625505220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10754 (or 10746 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 625505220 is about 25010.1023588469. The cubic root of 625505220 is about 855.2182883704.

The spelling of 625505220 in words is "six hundred twenty-five million, five hundred five thousand, two hundred twenty".