22525303521 has 8 divisors (see below), whose sum is σ = 34324272064. Its totient is φ = 12871602000.

The previous prime is 22525303513. The next prime is 22525303543. The reversal of 22525303521 is 12530352522.

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

It is not a de Polignac number, because 22525303521 - 2³ = 22525303513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22525303561) 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, 536316730 + ... + 536316771.

It is an arithmetic number, because the mean of its divisors is an integer number (4290534008).

Almost surely, 2^22525303521 is an apocalyptic number.

22525303521 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22525303521 is a deficient number, since it is larger than the sum of its proper divisors (11798968543).

22525303521 is a wasteful number, since it uses less digits than its factorization.

22525303521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1072633511.

The product of its (nonzero) digits is 18000, while the sum is 30.

The spelling of 22525303521 in words is "twenty-two billion, five hundred twenty-five million, three hundred three thousand, five hundred twenty-one".