20251223441 has 4 divisors (see below), whose sum is σ = 20251660800. Its totient is φ = 20250786084.

The previous prime is 20251223423. The next prime is 20251223449. The reversal of 20251223441 is 14432215202.

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 a de Polignac number, because none of the positive numbers 2^k-20251223441 is a prime.

It is a super-3 number, since 3×20251223441³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20251223441.

It is not an unprimeable number, because it can be changed into a prime (20251223449) 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, 139721 + ... + 244998.

It is an arithmetic number, because the mean of its divisors is an integer number (5062915200).

Almost surely, 2^20251223441 is an apocalyptic number.

It is an amenable number.

20251223441 is a deficient number, since it is larger than the sum of its proper divisors (437359).

20251223441 is an equidigital number, since it uses as much as digits as its factorization.

20251223441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437358.

The product of its (nonzero) digits is 3840, while the sum is 26.

Adding to 20251223441 its reverse (14432215202), we get a palindrome (34683438643).

The spelling of 20251223441 in words is "twenty billion, two hundred fifty-one million, two hundred twenty-three thousand, four hundred forty-one".