2516525009 has 2 divisors, whose sum is σ = 2516525010. Its totient is φ = 2516525008.

The previous prime is 2516525003. The next prime is 2516525023. The reversal of 2516525009 is 9005256152.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2187900625 + 328624384 = 46775^2 + 18128^2 .

It is a cyclic number.

It is not a de Polignac number, because 2516525009 - 2²⁰ = 2515476433 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2516525009.

It is not a weakly prime, because it can be changed into another prime (2516525003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1258262504 + 1258262505.

It is an arithmetic number, because the mean of its divisors is an integer number (1258262505).

Almost surely, 2^2516525009 is an apocalyptic number.

It is an amenable number.

2516525009 is a deficient number, since it is larger than the sum of its proper divisors (1).

2516525009 is an equidigital number, since it uses as much as digits as its factorization.

2516525009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27000, while the sum is 35.

The square root of 2516525009 is about 50164.9779128826. The cubic root of 2516525009 is about 1360.1926286046.

The spelling of 2516525009 in words is "two billion, five hundred sixteen million, five hundred twenty-five thousand, nine".