620243244025 has 6 divisors (see below), whose sum is σ = 769101622622. Its totient is φ = 496194595200.

The previous prime is 620243243993. The next prime is 620243244029. The reversal of 620243244025 is 520442342026.

It can be written as a sum of positive squares in 3 ways, for example, as 85800368889 + 534442875136 = 292917^2 + 731056^2 .

It is not a de Polignac number, because 620243244025 - 2⁵ = 620243243993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (620243244029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12404864856 + ... + 12404864905.

Almost surely, 2^620243244025 is an apocalyptic number.

It is an amenable number.

620243244025 is a deficient number, since it is larger than the sum of its proper divisors (148858378597).

620243244025 is a wasteful number, since it uses less digits than its factorization.

620243244025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24809729771 (or 24809729766 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 34.

The spelling of 620243244025 in words is "six hundred twenty billion, two hundred forty-three million, two hundred forty-four thousand, twenty-five".