2565335651 has 2 divisors, whose sum is σ = 2565335652. Its totient is φ = 2565335650.

The previous prime is 2565335609. The next prime is 2565335693. The reversal of 2565335651 is 1565335652.

It is a balanced prime because it is at equal distance from previous prime (2565335609) and next prime (2565335693).

It is a cyclic number.

It is not a de Polignac number, because 2565335651 - 2⁶ = 2565335587 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2565335599 and 2565335608.

It is not a weakly prime, because it can be changed into another prime (2565335351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1282667825 + 1282667826.

It is an arithmetic number, because the mean of its divisors is an integer number (1282667826).

Almost surely, 2^2565335651 is an apocalyptic number.

2565335651 is a deficient number, since it is larger than the sum of its proper divisors (1).

2565335651 is an equidigital number, since it uses as much as digits as its factorization.

2565335651 is an evil number, because the sum of its binary digits is even.

The product of its digits is 405000, while the sum is 41.

The square root of 2565335651 is about 50649.1426482226. The cubic root of 2565335651 is about 1368.9304972840.

Subtracting from 2565335651 its reverse (1565335652), we obtain a palindrome (999999999).

The spelling of 2565335651 in words is "two billion, five hundred sixty-five million, three hundred thirty-five thousand, six hundred fifty-one".