22500000001 has 8 divisors (see below), whose sum is σ = 23279161320. Its totient is φ = 21721058688.

The previous prime is 22499999993. The next prime is 22500000007. The reversal of 22500000001 is 10000000522.

It is a Cunningham number, because it is equal to 150000²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 148254976 + 22351745025 = 12176^2 + 149505^2 .

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 22500000001 - 2³ = 22499999993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22500000007) 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, 168535 + ... + 270931.

It is an arithmetic number, because the mean of its divisors is an integer number (2909895165).

Almost surely, 2^22500000001 is an apocalyptic number.

It is an amenable number.

22500000001 is a deficient number, since it is larger than the sum of its proper divisors (779161319).

22500000001 is a wasteful number, since it uses less digits than its factorization.

22500000001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110003.

The product of its (nonzero) digits is 20, while the sum is 10.

Adding to 22500000001 its reverse (10000000522), we get a palindrome (32500000523).

The spelling of 22500000001 in words is "twenty-two billion, five hundred million, one", and thus it is an aban number.