24550252421 has 2 divisors, whose sum is σ = 24550252422. Its totient is φ = 24550252420.

The previous prime is 24550252387. The next prime is 24550252427. The reversal of 24550252421 is 12425205542.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24066868225 + 483384196 = 155135^2 + 21986^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-24550252421 is a prime.

It is a super-2 number, since 2×24550252421² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (24550252427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12275126210 + 12275126211.

It is an arithmetic number, because the mean of its divisors is an integer number (12275126211).

Almost surely, 2^24550252421 is an apocalyptic number.

It is an amenable number.

24550252421 is a deficient number, since it is larger than the sum of its proper divisors (1).

24550252421 is an equidigital number, since it uses as much as digits as its factorization.

24550252421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32000, while the sum is 32.

Adding to 24550252421 its reverse (12425205542), we get a palindrome (36975457963).

The spelling of 24550252421 in words is "twenty-four billion, five hundred fifty million, two hundred fifty-two thousand, four hundred twenty-one".