12252025221 has 4 divisors (see below), whose sum is σ = 16336033632. Its totient is φ = 8168016812.

The previous prime is 12252025213. The next prime is 12252025223.

12252025221 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12252025221 - 2³ = 12252025213 is a prime.

It is a super-2 number, since 2×12252025221² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12252025191 and 12252025200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12252025223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2042004201 + ... + 2042004206.

It is an arithmetic number, because the mean of its divisors is an integer number (4084008408).

Almost surely, 2^12252025221 is an apocalyptic number.

It is an amenable number.

12252025221 is a deficient number, since it is larger than the sum of its proper divisors (4084008411).

12252025221 is an equidigital number, since it uses as much as digits as its factorization.

12252025221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4084008410.

The product of its (nonzero) digits is 1600, while the sum is 24.

It can be divided in two parts, 122520 and 25221, that added together give a palindrome (147741).

The spelling of 12252025221 in words is "twelve billion, two hundred fifty-two million, twenty-five thousand, two hundred twenty-one".