620544025 has 24 divisors (see below), whose sum is σ = 808430400. Its totient is φ = 471599040.

The previous prime is 620544011. The next prime is 620544031. The reversal of 620544025 is 520445026.

It is not a de Polignac number, because 620544025 - 2¹³ = 620535833 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 620543984 and 620544002.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 82054 + ... + 89296.

It is an arithmetic number, because the mean of its divisors is an integer number (33684600).

Almost surely, 2^620544025 is an apocalyptic number.

It is an amenable number.

620544025 is a deficient number, since it is larger than the sum of its proper divisors (187886375).

620544025 is a wasteful number, since it uses less digits than its factorization.

620544025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7425 (or 7420 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 620544025 is about 24910.7210855085. The cubic root of 620544025 is about 852.9512292606.

The spelling of 620544025 in words is "six hundred twenty million, five hundred forty-four thousand, twenty-five".