2565413651 has 2 divisors, whose sum is σ = 2565413652. Its totient is φ = 2565413650.

The previous prime is 2565413581. The next prime is 2565413663. The reversal of 2565413651 is 1563145652.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2565413651 - 2¹⁴ = 2565397267 is a prime.

It is not a weakly prime, because it can be changed into another prime (2565013651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1282706825 + 1282706826.

It is an arithmetic number, because the mean of its divisors is an integer number (1282706826).

Almost surely, 2^2565413651 is an apocalyptic number.

2565413651 is a deficient number, since it is larger than the sum of its proper divisors (1).

2565413651 is an equidigital number, since it uses as much as digits as its factorization.

2565413651 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108000, while the sum is 38.

The square root of 2565413651 is about 50649.9126455318. The cubic root of 2565413651 is about 1368.9443714265.

The spelling of 2565413651 in words is "two billion, five hundred sixty-five million, four hundred thirteen thousand, six hundred fifty-one".