23225566321 has 4 divisors (see below), whose sum is σ = 23253249600. Its totient is φ = 23197883044.

The previous prime is 23225566319. The next prime is 23225566373. The reversal of 23225566321 is 12366552232.

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 23225566321 - 2¹ = 23225566319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23225563321) 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, 13840381 + ... + 13842058.

It is an arithmetic number, because the mean of its divisors is an integer number (5813312400).

Almost surely, 2^23225566321 is an apocalyptic number.

It is an amenable number.

23225566321 is a deficient number, since it is larger than the sum of its proper divisors (27683279).

23225566321 is an equidigital number, since it uses as much as digits as its factorization.

23225566321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27683278.

The product of its digits is 129600, while the sum is 37.

The spelling of 23225566321 in words is "twenty-three billion, two hundred twenty-five million, five hundred sixty-six thousand, three hundred twenty-one".