22215502325 has 6 divisors (see below), whose sum is σ = 27547222914. Its totient is φ = 17772401840.

The previous prime is 22215502321. The next prime is 22215502339. The reversal of 22215502325 is 52320551222.

It can be written as a sum of positive squares in 3 ways, for example, as 4836089764 + 17379412561 = 69542^2 + 131831^2 .

It is not a de Polignac number, because 22215502325 - 2² = 22215502321 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22215502321) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 444310022 + ... + 444310071.

It is an arithmetic number, because the mean of its divisors is an integer number (4591203819).

Almost surely, 2^22215502325 is an apocalyptic number.

22215502325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22215502325 is a deficient number, since it is larger than the sum of its proper divisors (5331720589).

22215502325 is an equidigital number, since it uses as much as digits as its factorization.

22215502325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 888620103 (or 888620098 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 29.

The spelling of 22215502325 in words is "twenty-two billion, two hundred fifteen million, five hundred two thousand, three hundred twenty-five".