2520235909 has 2 divisors, whose sum is σ = 2520235910. Its totient is φ = 2520235908.

The previous prime is 2520235903. The next prime is 2520235919. The reversal of 2520235909 is 9095320252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2505002500 + 15233409 = 50050^2 + 3903^2 .

It is a cyclic number.

It is not a de Polignac number, because 2520235909 - 2¹⁵ = 2520203141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2520235903) 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 as a sum of consecutive naturals, namely, 1260117954 + 1260117955.

It is an arithmetic number, because the mean of its divisors is an integer number (1260117955).

Almost surely, 2^2520235909 is an apocalyptic number.

It is an amenable number.

2520235909 is a deficient number, since it is larger than the sum of its proper divisors (1).

2520235909 is an equidigital number, since it uses as much as digits as its factorization.

2520235909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48600, while the sum is 37.

The square root of 2520235909 is about 50201.9512469386. The cubic root of 2520235909 is about 1360.8608860605.

The spelling of 2520235909 in words is "two billion, five hundred twenty million, two hundred thirty-five thousand, nine hundred nine".