2565411551 has 2 divisors, whose sum is σ = 2565411552. Its totient is φ = 2565411550.

The previous prime is 2565411517. The next prime is 2565411587. The reversal of 2565411551 is 1551145652.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2565411551 - 2¹⁰ = 2565410527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2565411151) 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, 1282705775 + 1282705776.

It is an arithmetic number, because the mean of its divisors is an integer number (1282705776).

Almost surely, 2^2565411551 is an apocalyptic number.

2565411551 is a deficient number, since it is larger than the sum of its proper divisors (1).

2565411551 is an equidigital number, since it uses as much as digits as its factorization.

2565411551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30000, while the sum is 35.

The square root of 2565411551 is about 50649.8919149883. The cubic root of 2565411551 is about 1368.9439978955.

The spelling of 2565411551 in words is "two billion, five hundred sixty-five million, four hundred eleven thousand, five hundred fifty-one".