25423345320 has 256 divisors, whose sum is σ = 82811289600. Its totient is φ = 6224655360.

The previous prime is 25423345229. The next prime is 25423345331. The reversal of 25423345320 is 2354332452.

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, 15286809 + ... + 15288471.

It is an arithmetic number, because the mean of its divisors is an integer number (323481600).

Almost surely, 2^25423345320 is an apocalyptic number.

25423345320 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 25423345320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41405644800).

25423345320 is an abundant number, since it is smaller than the sum of its proper divisors (57387944280).

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

25423345320 is a wasteful number, since it uses less digits than its factorization.

25423345320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1920 (or 1916 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 33.

Adding to 25423345320 its reverse (2354332452), we get a palindrome (27777677772).

The spelling of 25423345320 in words is "twenty-five billion, four hundred twenty-three million, three hundred forty-five thousand, three hundred twenty".