2500507609 has 2 divisors, whose sum is σ = 2500507610. Its totient is φ = 2500507608.

The previous prime is 2500507561. The next prime is 2500507621. The reversal of 2500507609 is 9067050052.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2425858009 + 74649600 = 49253^2 + 8640^2 .

It is a cyclic number.

It is not a de Polignac number, because 2500507609 - 2⁷ = 2500507481 is a prime.

It is not a weakly prime, because it can be changed into another prime (2500507649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1250253804 + 1250253805.

It is an arithmetic number, because the mean of its divisors is an integer number (1250253805).

Almost surely, 2^2500507609 is an apocalyptic number.

It is an amenable number.

2500507609 is a deficient number, since it is larger than the sum of its proper divisors (1).

2500507609 is an equidigital number, since it uses as much as digits as its factorization.

2500507609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18900, while the sum is 34.

The square root of 2500507609 is about 50005.0758323593. The cubic root of 2500507609 is about 1357.3006596019.

The spelling of 2500507609 in words is "two billion, five hundred million, five hundred seven thousand, six hundred nine".