23425399999 has 4 divisors (see below), whose sum is σ = 23425717864. Its totient is φ = 23425082136.

The previous prime is 23425399997. The next prime is 23425400021. The reversal of 23425399999 is 99999352432.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 23425399999 - 2¹ = 23425399997 is a prime.

It is a super-2 number, since 2×23425399999² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23425399999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23425399997) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15229 + ... + 216985.

It is an arithmetic number, because the mean of its divisors is an integer number (5856429466).

Almost surely, 2^23425399999 is an apocalyptic number.

23425399999 is a deficient number, since it is larger than the sum of its proper divisors (317865).

23425399999 is a wasteful number, since it uses less digits than its factorization.

23425399999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317864.

The product of its digits is 42515280, while the sum is 64.

The spelling of 23425399999 in words is "twenty-three billion, four hundred twenty-five million, three hundred ninety-nine thousand, nine hundred ninety-nine".