25120045220 has 24 divisors (see below), whose sum is σ = 53616886008. Its totient is φ = 9883296000.

The previous prime is 25120045199. The next prime is 25120045229. The reversal of 25120045220 is 2254002152.

It can be written as a sum of positive squares in 4 ways, for example, as 523768996 + 24596276224 = 22886^2 + 156832^2 .

It is not an unprimeable number, because it can be changed into a prime (25120045229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10293881 + ... + 10296320.

It is an arithmetic number, because the mean of its divisors is an integer number (2234036917).

Almost surely, 2^25120045220 is an apocalyptic number.

25120045220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25120045220 is an abundant number, since it is smaller than the sum of its proper divisors (28496840788).

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

25120045220 is a wasteful number, since it uses less digits than its factorization.

25120045220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20590271 (or 20590269 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

Adding to 25120045220 its reverse (2254002152), we get a palindrome (27374047372).

The spelling of 25120045220 in words is "twenty-five billion, one hundred twenty million, forty-five thousand, two hundred twenty".