25031223212 has 24 divisors (see below), whose sum is σ = 45322228560. Its totient is φ = 12082150080.

The previous prime is 25031223187. The next prime is 25031223221. The reversal of 25031223212 is 21232213052.

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, 982823 + ... + 1007969.

It is an arithmetic number, because the mean of its divisors is an integer number (1888426190).

Almost surely, 2^25031223212 is an apocalyptic number.

It is an amenable number.

25031223212 is a deficient number, since it is larger than the sum of its proper divisors (20291005348).

25031223212 is a wasteful number, since it uses less digits than its factorization.

25031223212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33761 (or 33759 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

Adding to 25031223212 its reverse (21232213052), we get a palindrome (46263436264).

The spelling of 25031223212 in words is "twenty-five billion, thirty-one million, two hundred twenty-three thousand, two hundred twelve".