25906012761247 has 2 divisors, whose sum is σ = 25906012761248. Its totient is φ = 25906012761246.

The previous prime is 25906012761227. The next prime is 25906012761287. The reversal of 25906012761247 is 74216721060952.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25906012761247 is a prime.

It is a super-2 number, since 2×25906012761247² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25906012761194 and 25906012761203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25906012761227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12953006380623 + 12953006380624.

It is an arithmetic number, because the mean of its divisors is an integer number (12953006380624).

Almost surely, 2^{25906012761247} is an apocalyptic number.

25906012761247 is a deficient number, since it is larger than the sum of its proper divisors (1).

25906012761247 is an equidigital number, since it uses as much as digits as its factorization.

25906012761247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2540160, while the sum is 52.

The spelling of 25906012761247 in words is "twenty-five trillion, nine hundred six billion, twelve million, seven hundred sixty-one thousand, two hundred forty-seven".