24513125421 has 4 divisors (see below), whose sum is σ = 32684167232. Its totient is φ = 16342083612.

The previous prime is 24513125393. The next prime is 24513125471. The reversal of 24513125421 is 12452131542.

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 not a de Polignac number, because 24513125421 - 2¹¹ = 24513123373 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 (24513125471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4085520901 + ... + 4085520906.

It is an arithmetic number, because the mean of its divisors is an integer number (8171041808).

Almost surely, 2^24513125421 is an apocalyptic number.

It is an amenable number.

24513125421 is a deficient number, since it is larger than the sum of its proper divisors (8171041811).

24513125421 is an equidigital number, since it uses as much as digits as its factorization.

24513125421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8171041810.

The product of its digits is 9600, while the sum is 30.

Adding to 24513125421 its reverse (12452131542), we get a palindrome (36965256963).

The spelling of 24513125421 in words is "twenty-four billion, five hundred thirteen million, one hundred twenty-five thousand, four hundred twenty-one".