25888822580 has 72 divisors (see below), whose sum is σ = 56462268408. Its totient is φ = 9970684416.

The previous prime is 25888822573. The next prime is 25888822613. The reversal of 25888822580 is 8522888852.

It can be written as a sum of positive squares in 12 ways, for example, as 5539229476 + 20349593104 = 74426^2 + 142652^2 .

It is a super-2 number, since 2×25888822580² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6675602 + ... + 6679478.

Almost surely, 2^25888822580 is an apocalyptic number.

25888822580 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25888822580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28231134204).

25888822580 is an abundant number, since it is smaller than the sum of its proper divisors (30573445828).

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

25888822580 is a wasteful number, since it uses less digits than its factorization.

25888822580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4341 (or 4310 counting only the distinct ones).

The product of its (nonzero) digits is 6553600, while the sum is 56.

The spelling of 25888822580 in words is "twenty-five billion, eight hundred eighty-eight million, eight hundred twenty-two thousand, five hundred eighty".