25726261250519 has 2 divisors, whose sum is σ = 25726261250520. Its totient is φ = 25726261250518.

The previous prime is 25726261250509. The next prime is 25726261250561. The reversal of 25726261250519 is 91505216262752.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25726261250519 is a prime.

It is a super-2 number, since 2×25726261250519² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25726261250509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12863130625259 + 12863130625260.

It is an arithmetic number, because the mean of its divisors is an integer number (12863130625260).

Almost surely, 2^{25726261250519} is an apocalyptic number.

25726261250519 is a deficient number, since it is larger than the sum of its proper divisors (1).

25726261250519 is an equidigital number, since it uses as much as digits as its factorization.

25726261250519 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536000, while the sum is 53.

The spelling of 25726261250519 in words is "twenty-five trillion, seven hundred twenty-six billion, two hundred sixty-one million, two hundred fifty thousand, five hundred nineteen".