25216567320 has 256 divisors, whose sum is σ = 87947182080. Its totient is φ = 5664960000.

The previous prime is 25216567309. The next prime is 25216567331. The reversal of 25216567320 is 2376561252.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (25216567309) and next prime (25216567331).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 33576945 + ... + 33577695.

It is an arithmetic number, because the mean of its divisors is an integer number (343543680).

Almost surely, 2^25216567320 is an apocalyptic number.

25216567320 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 25216567320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43973591040).

25216567320 is an abundant number, since it is smaller than the sum of its proper divisors (62730614760).

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

25216567320 is a wasteful number, since it uses less digits than its factorization.

25216567320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1406 (or 1402 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 39.

The spelling of 25216567320 in words is "twenty-five billion, two hundred sixteen million, five hundred sixty-seven thousand, three hundred twenty".