25079308422 has 64 divisors (see below), whose sum is σ = 59869062144. Its totient is φ = 6847948800.

The previous prime is 25079308421. The next prime is 25079308427. The reversal of 25079308422 is 22480397052.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25079308421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1149358 + ... + 1170974.

It is an arithmetic number, because the mean of its divisors is an integer number (935454096).

Almost surely, 2^25079308422 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25079308422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29934531072).

25079308422 is an abundant number, since it is smaller than the sum of its proper divisors (34789753722).

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

25079308422 is a wasteful number, since it uses less digits than its factorization.

25079308422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22853.

The product of its (nonzero) digits is 241920, while the sum is 42.

The spelling of 25079308422 in words is "twenty-five billion, seventy-nine million, three hundred eight thousand, four hundred twenty-two".