25715836712 has 8 divisors (see below), whose sum is σ = 48217193850. Its totient is φ = 12857918352.

The previous prime is 25715836649. The next prime is 25715836733. The reversal of 25715836712 is 21763851752.

It can be written as a sum of positive squares in only one way, i.e., 22585881796 + 3129954916 = 150286^2 + 55946^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×25715836712² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1607239787 + ... + 1607239802.

Almost surely, 2^25715836712 is an apocalyptic number.

It is an amenable number.

25715836712 is a deficient number, since it is larger than the sum of its proper divisors (22501357138).

25715836712 is a wasteful number, since it uses less digits than its factorization.

25715836712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3214479595 (or 3214479591 counting only the distinct ones).

The product of its digits is 705600, while the sum is 47.

The spelling of 25715836712 in words is "twenty-five billion, seven hundred fifteen million, eight hundred thirty-six thousand, seven hundred twelve".