25323623999 has 2 divisors, whose sum is σ = 25323624000. Its totient is φ = 25323623998.

The previous prime is 25323623993. The next prime is 25323624041. The reversal of 25323623999 is 99932632352.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25323623999 - 2²⁰ = 25322575423 is a prime.

It is a super-3 number, since 3×25323623999³ (a number of 32 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25323623999.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25323623993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12661811999 + 12661812000.

It is an arithmetic number, because the mean of its divisors is an integer number (12661812000).

Almost surely, 2^25323623999 is an apocalyptic number.

25323623999 is a deficient number, since it is larger than the sum of its proper divisors (1).

25323623999 is an equidigital number, since it uses as much as digits as its factorization.

25323623999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4723920, while the sum is 53.

The spelling of 25323623999 in words is "twenty-five billion, three hundred twenty-three million, six hundred twenty-three thousand, nine hundred ninety-nine".