25213222120 has 32 divisors (see below), whose sum is σ = 56939109120. Its totient is φ = 10048069440.

The previous prime is 25213222037. The next prime is 25213222147. The reversal of 25213222120 is 2122231252.

It is a junction number, because it is equal to n+sod(n) for n = 25213222091 and 25213222100.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1152132 + ... + 1173811.

It is an arithmetic number, because the mean of its divisors is an integer number (1779347160).

Almost surely, 2^25213222120 is an apocalyptic number.

25213222120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25213222120 is an abundant number, since it is smaller than the sum of its proper divisors (31725887000).

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

25213222120 is a wasteful number, since it uses less digits than its factorization.

25213222120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2326225 (or 2326221 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

Adding to 25213222120 its reverse (2122231252), we get a palindrome (27335453372).

The spelling of 25213222120 in words is "twenty-five billion, two hundred thirteen million, two hundred twenty-two thousand, one hundred twenty".