25423921320 has 256 divisors, whose sum is σ = 88086528000. Its totient is φ = 5750317056.

The previous prime is 25423921307. The next prime is 25423921343. The reversal of 25423921320 is 2312932452.

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, 53076841 + ... + 53077319.

It is an arithmetic number, because the mean of its divisors is an integer number (344088000).

Almost surely, 2^25423921320 is an apocalyptic number.

25423921320 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 25423921320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44043264000).

25423921320 is an abundant number, since it is smaller than the sum of its proper divisors (62662606680).

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

25423921320 is a wasteful number, since it uses less digits than its factorization.

25423921320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1032 (or 1028 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 33.

The spelling of 25423921320 in words is "twenty-five billion, four hundred twenty-three million, nine hundred twenty-one thousand, three hundred twenty".