25111235020 has 24 divisors (see below), whose sum is σ = 53148824064. Its totient is φ = 9965402496.

The previous prime is 25111234963. The next prime is 25111235063. The reversal of 25111235020 is 2053211152.

It is a junction number, because it is equal to n+sod(n) for n = 25111234982 and 25111235000.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 4940617 + ... + 4945696.

It is an arithmetic number, because the mean of its divisors is an integer number (2214534336).

Almost surely, 2^25111235020 is an apocalyptic number.

25111235020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25111235020 is an abundant number, since it is smaller than the sum of its proper divisors (28037589044).

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

25111235020 is a wasteful number, since it uses less digits than its factorization.

25111235020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9886449 (or 9886447 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 22.

Adding to 25111235020 its reverse (2053211152), we get a palindrome (27164446172).

The spelling of 25111235020 in words is "twenty-five billion, one hundred eleven million, two hundred thirty-five thousand, twenty".