25688874969 has 12 divisors (see below), whose sum is σ = 39059108400. Its totient is φ = 16224552504.

The previous prime is 25688874949. The next prime is 25688874973. The reversal of 25688874969 is 96947888652.

25688874969 is a `hidden beast` number, since 2 + 56 + 8 + 8 + 87 + 496 + 9 = 666.

It is not a de Polignac number, because 25688874969 - 2¹¹ = 25688872921 is a prime.

It is a super-2 number, since 2×25688874969² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25688874897 and 25688874906.

It is not an unprimeable number, because it can be changed into a prime (25688874949) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 75113499 + ... + 75113840.

It is an arithmetic number, because the mean of its divisors is an integer number (3254925700).

Almost surely, 2^25688874969 is an apocalyptic number.

It is an amenable number.

25688874969 is a deficient number, since it is larger than the sum of its proper divisors (13370233431).

25688874969 is a wasteful number, since it uses less digits than its factorization.

25688874969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150227364 (or 150227361 counting only the distinct ones).

The product of its digits is 418037760, while the sum is 72.

The spelling of 25688874969 in words is "twenty-five billion, six hundred eighty-eight million, eight hundred seventy-four thousand, nine hundred sixty-nine".