25906012761256 has 16 divisors (see below), whose sum is σ = 48632938097940. Its totient is φ = 12937229268480.

The previous prime is 25906012761247. The next prime is 25906012761287. The reversal of 25906012761256 is 65216721060952.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 25903315620900 + 2697140356 = 5089530^2 + 51934^2 .

It is a super-2 number, since 2×25906012761256² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1972132041 + ... + 1972145176.

Almost surely, 2^{25906012761256} is an apocalyptic number.

It is an amenable number.

25906012761256 is a deficient number, since it is larger than the sum of its proper divisors (22726925336684).

25906012761256 is a wasteful number, since it uses less digits than its factorization.

25906012761256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3944278044 (or 3944278040 counting only the distinct ones).

The product of its (nonzero) digits is 2721600, while the sum is 52.

The spelling of 25906012761256 in words is "twenty-five trillion, nine hundred six billion, twelve million, seven hundred sixty-one thousand, two hundred fifty-six".