620713025 has 6 divisors (see below), whose sum is σ = 769684182. Its totient is φ = 496570400.

The previous prime is 620713021. The next prime is 620713069. The reversal of 620713025 is 520317026.

620713025 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 12054784 + 608658241 = 3472^2 + 24671^2 .

It is not a de Polignac number, because 620713025 - 2² = 620713021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 620712985 and 620713003.

It is not an unprimeable number, because it can be changed into a prime (620713021) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12414236 + ... + 12414285.

It is an arithmetic number, because the mean of its divisors is an integer number (128280697).

Almost surely, 2^620713025 is an apocalyptic number.

It is an amenable number.

620713025 is a deficient number, since it is larger than the sum of its proper divisors (148971157).

620713025 is a wasteful number, since it uses less digits than its factorization.

620713025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24828531 (or 24828526 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 620713025 is about 24914.1129683559. The cubic root of 620713025 is about 853.0286536216.

The spelling of 620713025 in words is "six hundred twenty million, seven hundred thirteen thousand, twenty-five".