25423421324 has 72 divisors (see below), whose sum is σ = 54081562080. Its totient is φ = 10241961984.

The previous prime is 25423421321. The next prime is 25423421399. The reversal of 25423421324 is 42312432452.

It is not an unprimeable number, because it can be changed into a prime (25423421321) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8972612 + ... + 8975444.

Almost surely, 2^25423421324 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 25423421324, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27040781040).

25423421324 is an abundant number, since it is smaller than the sum of its proper divisors (28658140756).

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

25423421324 is a wasteful number, since it uses less digits than its factorization.

25423421324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3987 (or 3968 counting only the distinct ones).

The product of its digits is 46080, while the sum is 32.

Adding to 25423421324 its reverse (42312432452), we get a palindrome (67735853776).

The spelling of 25423421324 in words is "twenty-five billion, four hundred twenty-three million, four hundred twenty-one thousand, three hundred twenty-four".