25321245426 has 96 divisors (see below), whose sum is σ = 57853785600. Its totient is φ = 7992915840.

The previous prime is 25321245419. The next prime is 25321245431. The reversal of 25321245426 is 62454212352.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6472411 + ... + 6476321.

It is an arithmetic number, because the mean of its divisors is an integer number (602643600).

Almost surely, 2^25321245426 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25321245426, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28926892800).

25321245426 is an abundant number, since it is smaller than the sum of its proper divisors (32532540174).

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

25321245426 is a wasteful number, since it uses less digits than its factorization.

25321245426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4184 (or 4181 counting only the distinct ones).

The product of its digits is 115200, while the sum is 36.

Adding to 25321245426 its reverse (62454212352), we get a palindrome (87775457778).

The spelling of 25321245426 in words is "twenty-five billion, three hundred twenty-one million, two hundred forty-five thousand, four hundred twenty-six".