2409256261 has 2 divisors, whose sum is σ = 2409256262. Its totient is φ = 2409256260.

The previous prime is 2409256243. The next prime is 2409256271. The reversal of 2409256261 is 1626529042.

2409256261 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., 2124288100 + 284968161 = 46090^2 + 16881^2 .

It is a cyclic number.

It is not a de Polignac number, because 2409256261 - 2⁹ = 2409255749 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2409256261.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2409256231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1204628130 + 1204628131.

It is an arithmetic number, because the mean of its divisors is an integer number (1204628131).

Almost surely, 2^2409256261 is an apocalyptic number.

It is an amenable number.

2409256261 is a deficient number, since it is larger than the sum of its proper divisors (1).

2409256261 is an equidigital number, since it uses as much as digits as its factorization.

2409256261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 2409256261 is about 49084.1752604645. The cubic root of 2409256261 is about 1340.5849271178.

The spelling of 2409256261 in words is "two billion, four hundred nine million, two hundred fifty-six thousand, two hundred sixty-one".