25409212080 has 320 divisors, whose sum is σ = 93192035328. Its totient is φ = 5606277120.

The previous prime is 25409212079. The next prime is 25409212097. The reversal of 25409212080 is 8021290452.

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 63 ways as a sum of consecutive naturals, for example, 6679459 + ... + 6683261.

Almost surely, 2^25409212080 is an apocalyptic number.

25409212080 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 25409212080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46596017664).

25409212080 is an abundant number, since it is smaller than the sum of its proper divisors (67782823248).

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

25409212080 is a wasteful number, since it uses less digits than its factorization.

25409212080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3964 (or 3958 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The spelling of 25409212080 in words is "twenty-five billion, four hundred nine million, two hundred twelve thousand, eighty".