24985988009 has 2 divisors, whose sum is σ = 24985988010. Its totient is φ = 24985988008.

The previous prime is 24985987987. The next prime is 24985988011. The reversal of 24985988009 is 90088958942.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12802243609 + 12183744400 = 113147^2 + 110380^2 .

It is a cyclic number.

It is not a de Polignac number, because 24985988009 - 2¹⁶ = 24985922473 is a prime.

Together with 24985988011, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (24985988029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12492994004 + 12492994005.

It is an arithmetic number, because the mean of its divisors is an integer number (12492994005).

Almost surely, 2^24985988009 is an apocalyptic number.

It is an amenable number.

24985988009 is a deficient number, since it is larger than the sum of its proper divisors (1).

24985988009 is an equidigital number, since it uses as much as digits as its factorization.

24985988009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14929920, while the sum is 62.

The spelling of 24985988009 in words is "twenty-four billion, nine hundred eighty-five million, nine hundred eighty-eight thousand, nine".