2405722261 has 2 divisors, whose sum is σ = 2405722262. Its totient is φ = 2405722260.

The previous prime is 2405722219. The next prime is 2405722367. The reversal of 2405722261 is 1622275042.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2106259236 + 299463025 = 45894^2 + 17305^2 .

It is a cyclic number.

It is not a de Polignac number, because 2405722261 - 2⁷ = 2405722133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2405722211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1202861130 + 1202861131.

It is an arithmetic number, because the mean of its divisors is an integer number (1202861131).

Almost surely, 2^2405722261 is an apocalyptic number.

It is an amenable number.

2405722261 is a deficient number, since it is larger than the sum of its proper divisors (1).

2405722261 is an equidigital number, since it uses as much as digits as its factorization.

2405722261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 2405722261 is about 49048.1626669134. The cubic root of 2405722261 is about 1339.9291306174.

The spelling of 2405722261 in words is "two billion, four hundred five million, seven hundred twenty-two thousand, two hundred sixty-one".