22071559225 has 27 divisors (see below), whose sum is σ = 28060626159. Its totient is φ = 17221654800.

The previous prime is 22071559177. The next prime is 22071559231. The reversal of 22071559225 is 52295517022.

The square root of 22071559225 is 148565.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 7945761321 + 14125797904 = 89139^2 + 118852^2 .

It is not a de Polignac number, because 22071559225 - 2¹¹ = 22071557177 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 31941130 + ... + 31941820.

Almost surely, 2^22071559225 is an apocalyptic number.

22071559225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

22071559225 is the 148565-th square number.

22071559225 is the 74283-rd centered octagonal number.

It is an amenable number.

22071559225 is a deficient number, since it is larger than the sum of its proper divisors (5989066934).

22071559225 is an frugal number, since it uses more digits than its factorization.

22071559225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1478 (or 739 counting only the distinct ones).

The product of its (nonzero) digits is 126000, while the sum is 40.

The spelling of 22071559225 in words is "twenty-two billion, seventy-one million, five hundred fifty-nine thousand, two hundred twenty-five".