25688313464 has 32 divisors (see below), whose sum is σ = 52645224240. Its totient is φ = 11654073600.

The previous prime is 25688313451. The next prime is 25688313479. The reversal of 25688313464 is 46431388652.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 234299 + ... + 325994.

Almost surely, 2^25688313464 is an apocalyptic number.

It is an amenable number.

25688313464 is an abundant number, since it is smaller than the sum of its proper divisors (26956910776).

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

25688313464 is a wasteful number, since it uses less digits than its factorization.

25688313464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560831 (or 560827 counting only the distinct ones).

The product of its digits is 3317760, while the sum is 50.

The spelling of 25688313464 in words is "twenty-five billion, six hundred eighty-eight million, three hundred thirteen thousand, four hundred sixty-four".