22071440225 has 6 divisors (see below), whose sum is σ = 27368585910. Its totient is φ = 17657152160.

The previous prime is 22071440219. The next prime is 22071440239. The reversal of 22071440225 is 52204417022.

It can be written as a sum of positive squares in 3 ways, for example, as 1424911504 + 20646528721 = 37748^2 + 143689^2 .

It is not a de Polignac number, because 22071440225 - 2⁸ = 22071439969 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 441428780 + ... + 441428829.

It is an arithmetic number, because the mean of its divisors is an integer number (4561430985).

Almost surely, 2^22071440225 is an apocalyptic number.

22071440225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22071440225 is a deficient number, since it is larger than the sum of its proper divisors (5297145685).

22071440225 is an equidigital number, since it uses as much as digits as its factorization.

22071440225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 882857619 (or 882857614 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 29.

Adding to 22071440225 its reverse (52204417022), we get a palindrome (74275857247).

The spelling of 22071440225 in words is "twenty-two billion, seventy-one million, four hundred forty thousand, two hundred twenty-five".