23222525043521 has 8 divisors (see below), whose sum is σ = 24991647010344. Its totient is φ = 21498190974720.

The previous prime is 23222525043517. The next prime is 23222525043577. The reversal of 23222525043521 is 12534052522232.

It can be written as a sum of positive squares in 4 ways, for example, as 5581382625025 + 17641142418496 = 2362495^2 + 4200136^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23222525043521 - 2² = 23222525043517 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23222525073521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11196973430 + ... + 11196975503.

It is an arithmetic number, because the mean of its divisors is an integer number (3123955876293).

Almost surely, 2^{23222525043521} is an apocalyptic number.

It is an amenable number.

23222525043521 is a deficient number, since it is larger than the sum of its proper divisors (1769121966823).

23222525043521 is a wasteful number, since it uses less digits than its factorization.

23222525043521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22393949011.

The product of its (nonzero) digits is 288000, while the sum is 38.

Adding to 23222525043521 its reverse (12534052522232), we get a palindrome (35756577565753).

The spelling of 23222525043521 in words is "twenty-three trillion, two hundred twenty-two billion, five hundred twenty-five million, forty-three thousand, five hundred twenty-one".