23565250249 has 2 divisors, whose sum is σ = 23565250250. Its totient is φ = 23565250248.

The previous prime is 23565250201. The next prime is 23565250271. The reversal of 23565250249 is 94205256532.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23056296649 + 508953600 = 151843^2 + 22560^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23565250249 is a prime.

It is not a weakly prime, because it can be changed into another prime (23565250949) 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 as a sum of consecutive naturals, namely, 11782625124 + 11782625125.

It is an arithmetic number, because the mean of its divisors is an integer number (11782625125).

Almost surely, 2^23565250249 is an apocalyptic number.

It is an amenable number.

23565250249 is a deficient number, since it is larger than the sum of its proper divisors (1).

23565250249 is an equidigital number, since it uses as much as digits as its factorization.

23565250249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648000, while the sum is 43.

The spelling of 23565250249 in words is "twenty-three billion, five hundred sixty-five million, two hundred fifty thousand, two hundred forty-nine".