2501562209 has 2 divisors, whose sum is σ = 2501562210. Its totient is φ = 2501562208.

The previous prime is 2501562199. The next prime is 2501562221. The reversal of 2501562209 is 9022651052.

2501562209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1578313984 + 923248225 = 39728^2 + 30385^2 .

It is a cyclic number.

It is not a de Polignac number, because 2501562209 - 2²⁴ = 2484784993 is a prime.

It is not a weakly prime, because it can be changed into another prime (2501562269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1250781104 + 1250781105.

It is an arithmetic number, because the mean of its divisors is an integer number (1250781105).

Almost surely, 2^2501562209 is an apocalyptic number.

It is an amenable number.

2501562209 is a deficient number, since it is larger than the sum of its proper divisors (1).

2501562209 is an equidigital number, since it uses as much as digits as its factorization.

2501562209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 2501562209 is about 50015.6196502653. The cubic root of 2501562209 is about 1357.4914486086.

The spelling of 2501562209 in words is "two billion, five hundred one million, five hundred sixty-two thousand, two hundred nine".