25734025517 has 2 divisors, whose sum is σ = 25734025518. Its totient is φ = 25734025516.

The previous prime is 25734025459. The next prime is 25734025529. The reversal of 25734025517 is 71552043752.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22221566761 + 3512458756 = 149069^2 + 59266^2 .

It is a cyclic number.

It is not a de Polignac number, because 25734025517 - 2¹⁰ = 25734024493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25734025547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12867012758 + 12867012759.

It is an arithmetic number, because the mean of its divisors is an integer number (12867012759).

Almost surely, 2^25734025517 is an apocalyptic number.

It is an amenable number.

25734025517 is a deficient number, since it is larger than the sum of its proper divisors (1).

25734025517 is an equidigital number, since it uses as much as digits as its factorization.

25734025517 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 294000, while the sum is 41.

The spelling of 25734025517 in words is "twenty-five billion, seven hundred thirty-four million, twenty-five thousand, five hundred seventeen".