25686337452 has 24 divisors (see below), whose sum is σ = 60077841600. Its totient is φ = 8541676176.

The previous prime is 25686337441. The next prime is 25686337477. The reversal of 25686337452 is 25473368652.

It is a junction number, because it is equal to n+sod(n) for n = 25686337395 and 25686337404.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2549302 + ... + 2559357.

It is an arithmetic number, because the mean of its divisors is an integer number (2503243400).

Almost surely, 2^25686337452 is an apocalyptic number.

It is an amenable number.

25686337452 is an abundant number, since it is smaller than the sum of its proper divisors (34391504148).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25686337452 is a wasteful number, since it uses less digits than its factorization.

25686337452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5109085 (or 5109083 counting only the distinct ones).

The product of its digits is 7257600, while the sum is 51.

The spelling of 25686337452 in words is "twenty-five billion, six hundred eighty-six million, three hundred thirty-seven thousand, four hundred fifty-two".