25220908416 has 256 divisors, whose sum is σ = 78707116800. Its totient is φ = 7070023680.

The previous prime is 25220908411. The next prime is 25220908417. The reversal of 25220908416 is 61480902252.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25220908411) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4233696 + ... + 4239648.

It is an arithmetic number, because the mean of its divisors is an integer number (307449675).

Almost surely, 2^25220908416 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 25220908416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39353558400).

25220908416 is an abundant number, since it is smaller than the sum of its proper divisors (53486208384).

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

25220908416 is a wasteful number, since it uses less digits than its factorization.

25220908416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6057 (or 6045 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 39.

The spelling of 25220908416 in words is "twenty-five billion, two hundred twenty million, nine hundred eight thousand, four hundred sixteen".