25350221212 has 6 divisors (see below), whose sum is σ = 44362887128. Its totient is φ = 12675110604.

The previous prime is 25350221179. The next prime is 25350221261. The reversal of 25350221212 is 21212205352.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3168777648 + ... + 3168777655.

Almost surely, 2^25350221212 is an apocalyptic number.

It is an amenable number.

25350221212 is a deficient number, since it is larger than the sum of its proper divisors (19012665916).

25350221212 is a wasteful number, since it uses less digits than its factorization.

25350221212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6337555307 (or 6337555305 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 25350221212 its reverse (21212205352), we get a palindrome (46562426564).

The spelling of 25350221212 in words is "twenty-five billion, three hundred fifty million, two hundred twenty-one thousand, two hundred twelve".