23425444551 has 16 divisors (see below), whose sum is σ = 32084540000. Its totient is φ = 15191826048.

The previous prime is 23425444543. The next prime is 23425444577. The reversal of 23425444551 is 15544452432.

It is not a de Polignac number, because 23425444551 - 2³ = 23425444543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23425244551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 619785 + ... + 656493.

It is an arithmetic number, because the mean of its divisors is an integer number (2005283750).

Almost surely, 2^23425444551 is an apocalyptic number.

23425444551 is a deficient number, since it is larger than the sum of its proper divisors (8659095449).

23425444551 is a wasteful number, since it uses less digits than its factorization.

23425444551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42498.

The product of its digits is 384000, while the sum is 39.

Adding to 23425444551 its reverse (15544452432), we get a palindrome (38969896983).

The spelling of 23425444551 in words is "twenty-three billion, four hundred twenty-five million, four hundred forty-four thousand, five hundred fifty-one".