25627798064 has 60 divisors (see below), whose sum is σ = 54665345688. Its totient is φ = 11638380160.

The previous prime is 25627798039. The next prime is 25627798069. The reversal of 25627798064 is 46089772652.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is not an unprimeable number, because it can be changed into a prime (25627798069) by changing a digit.

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 in 11 ways as a sum of consecutive naturals, for example, 23361164 + ... + 23362260.

Almost surely, 2^25627798064 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25627798064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27332672844).

25627798064 is an abundant number, since it is smaller than the sum of its proper divisors (29037547624).

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

25627798064 is an frugal number, since it uses more digits than its factorization.

25627798064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2235 (or 1110 counting only the distinct ones).

The product of its (nonzero) digits is 10160640, while the sum is 56.

The spelling of 25627798064 in words is "twenty-five billion, six hundred twenty-seven million, seven hundred ninety-eight thousand, sixty-four".