25519422774689 has 2 divisors, whose sum is σ = 25519422774690. Its totient is φ = 25519422774688.

The previous prime is 25519422774653. The next prime is 25519422774757. The reversal of 25519422774689 is 98647722491552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21525888160000 + 3993534614689 = 4639600^2 + 1998383^2 .

It is a cyclic number.

It is not a de Polignac number, because 25519422774689 - 2²⁴ = 25519405997473 is a prime.

It is not a weakly prime, because it can be changed into another prime (25519422774089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12759711387344 + 12759711387345.

It is an arithmetic number, because the mean of its divisors is an integer number (12759711387345).

Almost surely, 2^{25519422774689} is an apocalyptic number.

It is an amenable number.

25519422774689 is a deficient number, since it is larger than the sum of its proper divisors (1).

25519422774689 is an equidigital number, since it uses as much as digits as its factorization.

25519422774689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 609638400, while the sum is 71.

The spelling of 25519422774689 in words is "twenty-five trillion, five hundred nineteen billion, four hundred twenty-two million, seven hundred seventy-four thousand, six hundred eighty-nine".