620418825 has 96 divisors (see below), whose sum is σ = 1299916800. Its totient is φ = 287400960.

The previous prime is 620418731. The next prime is 620418829. The reversal of 620418825 is 528814026.

620418825 is a `hidden beast` number, since 620 + 4 + 1 + 8 + 8 + 25 = 666.

It is not a de Polignac number, because 620418825 - 2⁷ = 620418697 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 620418825.

It is not an unprimeable number, because it can be changed into a prime (620418829) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 147096 + ... + 151254.

It is an arithmetic number, because the mean of its divisors is an integer number (13540800).

Almost surely, 2^620418825 is an apocalyptic number.

620418825 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

620418825 is an abundant number, since it is smaller than the sum of its proper divisors (679497975).

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

620418825 is a wasteful number, since it uses less digits than its factorization.

620418825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4208 (or 4197 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The square root of 620418825 is about 24908.2079845179. The cubic root of 620418825 is about 852.8938620300.

The spelling of 620418825 in words is "six hundred twenty million, four hundred eighteen thousand, eight hundred twenty-five".