25906012761287 has 2 divisors, whose sum is σ = 25906012761288. Its totient is φ = 25906012761286.

The previous prime is 25906012761247. The next prime is 25906012761289. The reversal of 25906012761287 is 78216721060952.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25906012761287 is a prime.

It is a super-2 number, since 2×25906012761287² (a number of 28 digits) contains 22 as substring.

Together with 25906012761289, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25906012761289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12953006380643 + 12953006380644.

It is an arithmetic number, because the mean of its divisors is an integer number (12953006380644).

Almost surely, 2^{25906012761287} is an apocalyptic number.

25906012761287 is a deficient number, since it is larger than the sum of its proper divisors (1).

25906012761287 is an equidigital number, since it uses as much as digits as its factorization.

25906012761287 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5080320, while the sum is 56.

The spelling of 25906012761287 in words is "twenty-five trillion, nine hundred six billion, twelve million, seven hundred sixty-one thousand, two hundred eighty-seven".