25982562606 has 384 divisors, whose sum is σ = 73465159680. Its totient is φ = 5943974400.

The previous prime is 25982562581. The next prime is 25982562647. The reversal of 25982562606 is 60626528952.

It is a super-2 number, since 2×25982562606² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 191 ways as a sum of consecutive naturals, for example, 238372080 + ... + 238372188.

It is an arithmetic number, because the mean of its divisors is an integer number (191315520).

Almost surely, 2^25982562606 is an apocalyptic number.

25982562606 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 25982562606, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36732579840).

25982562606 is an abundant number, since it is smaller than the sum of its proper divisors (47482597074).

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

25982562606 is a wasteful number, since it uses less digits than its factorization.

25982562606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272 (or 259 counting only the distinct ones).

The product of its (nonzero) digits is 3110400, while the sum is 51.

The spelling of 25982562606 in words is "twenty-five billion, nine hundred eighty-two million, five hundred sixty-two thousand, six hundred six".