240565725749 has 2 divisors, whose sum is σ = 240565725750. Its totient is φ = 240565725748.

The previous prime is 240565725713. The next prime is 240565725767. The reversal of 240565725749 is 947527565042.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 194553330724 + 46012395025 = 441082^2 + 214505^2 .

It is a cyclic number.

It is not a de Polignac number, because 240565725749 - 2²⁸ = 240297290293 is a prime.

It is a super-2 number, since 2×240565725749² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 240565725694 and 240565725703.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (240565725649) 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, 120282862874 + 120282862875.

It is an arithmetic number, because the mean of its divisors is an integer number (120282862875).

Almost surely, 2^240565725749 is an apocalyptic number.

It is an amenable number.

240565725749 is a deficient number, since it is larger than the sum of its proper divisors (1).

240565725749 is an equidigital number, since it uses as much as digits as its factorization.

240565725749 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21168000, while the sum is 56.

The spelling of 240565725749 in words is "two hundred forty billion, five hundred sixty-five million, seven hundred twenty-five thousand, seven hundred forty-nine".