25687053516969 has 144 divisors (see below), whose sum is σ = 42628892185152. Its totient is φ = 14813722699776.

The previous prime is 25687053516947. The next prime is 25687053516979. The reversal of 25687053516969 is 96961535078652.

25687053516969 is a `hidden beast` number, since 2 + 5 + 6 + 8 + 70 + 535 + 16 + 9 + 6 + 9 = 666.

It is not a de Polignac number, because 25687053516969 - 2⁵ = 25687053516937 is a prime.

It is a super-2 number, since 2×25687053516969² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25687053516897 and 25687053516906.

It is not an unprimeable number, because it can be changed into a prime (25687053516979) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 12824289322 + ... + 12824291324.

It is an arithmetic number, because the mean of its divisors is an integer number (296033973508).

Almost surely, 2^{25687053516969} is an apocalyptic number.

It is an amenable number.

25687053516969 is a deficient number, since it is larger than the sum of its proper divisors (16941838668183).

25687053516969 is a wasteful number, since it uses less digits than its factorization.

25687053516969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3496 (or 3476 counting only the distinct ones).

The product of its (nonzero) digits is 734832000, while the sum is 72.

The spelling of 25687053516969 in words is "twenty-five trillion, six hundred eighty-seven billion, fifty-three million, five hundred sixteen thousand, nine hundred sixty-nine".