23918543425 has 24 divisors (see below), whose sum is σ = 33901794432. Its totient is φ = 16398480000.

The previous prime is 23918543399. The next prime is 23918543443. The reversal of 23918543425 is 52434581932.

It is not a de Polignac number, because 23918543425 - 2⁵ = 23918543393 is a prime.

It is a super-2 number, since 2×23918543425² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1980405 + ... + 1992445.

It is an arithmetic number, because the mean of its divisors is an integer number (1412574768).

Almost surely, 2^23918543425 is an apocalyptic number.

23918543425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

23918543425 is a deficient number, since it is larger than the sum of its proper divisors (9983251007).

23918543425 is a wasteful number, since it uses less digits than its factorization.

23918543425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23409 (or 23404 counting only the distinct ones).

The product of its digits is 1036800, while the sum is 46.

The spelling of 23918543425 in words is "twenty-three billion, nine hundred eighteen million, five hundred forty-three thousand, four hundred twenty-five".