2520245009 has 2 divisors, whose sum is σ = 2520245010. Its totient is φ = 2520245008.

The previous prime is 2520244943. The next prime is 2520245041. The reversal of 2520245009 is 9005420252.

2520245009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2484723409 + 35521600 = 49847^2 + 5960^2 .

It is a cyclic number.

It is not a de Polignac number, because 2520245009 - 2²⁴ = 2503467793 is a prime.

It is not a weakly prime, because it can be changed into another prime (2520245069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1260122504 + 1260122505.

It is an arithmetic number, because the mean of its divisors is an integer number (1260122505).

Almost surely, 2^2520245009 is an apocalyptic number.

It is an amenable number.

2520245009 is a deficient number, since it is larger than the sum of its proper divisors (1).

2520245009 is an equidigital number, since it uses as much as digits as its factorization.

2520245009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 2520245009 is about 50202.0418807841. The cubic root of 2520245009 is about 1360.8625239785.

The spelling of 2520245009 in words is "two billion, five hundred twenty million, two hundred forty-five thousand, nine".