23355425021 has 4 divisors (see below), whose sum is σ = 23431501632. Its totient is φ = 23279348412.

The previous prime is 23355424979. The next prime is 23355425059. The reversal of 23355425021 is 12052455332.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23355425021 - 2¹⁰ = 23355423997 is a prime.

It is a super-4 number, since 4×23355425021⁴ (a number of 43 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23355421021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38037845 + ... + 38038458.

It is an arithmetic number, because the mean of its divisors is an integer number (5857875408).

Almost surely, 2^23355425021 is an apocalyptic number.

It is an amenable number.

23355425021 is a deficient number, since it is larger than the sum of its proper divisors (76076611).

23355425021 is an equidigital number, since it uses as much as digits as its factorization.

23355425021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76076610.

The product of its (nonzero) digits is 36000, while the sum is 32.

The spelling of 23355425021 in words is "twenty-three billion, three hundred fifty-five million, four hundred twenty-five thousand, twenty-one".