42222022225 has 12 divisors (see below), whose sum is σ = 52358961436. Its totient is φ = 33775260480.

The previous prime is 42222022211. The next prime is 42222022301. The reversal of 42222022225 is 52222022224.

It can be written as a sum of positive squares in 6 ways, for example, as 29986576 + 42192035649 = 5476^2 + 205407^2 .

It is not a de Polignac number, because 42222022225 - 2²³ = 42213633617 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42222022225.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 366739 + ... + 467911.

Almost surely, 2^42222022225 is an apocalyptic number.

It is an amenable number.

42222022225 is a deficient number, since it is larger than the sum of its proper divisors (10136939211).

42222022225 is a wasteful number, since it uses less digits than its factorization.

42222022225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117876 (or 117871 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 25.

Adding to 42222022225 its reverse (52222022224), we get a palindrome (94444044449).

Subtracting 42222022225 from its reverse (52222022224), we obtain a palindrome (9999999999).

The spelling of 42222022225 in words is "forty-two billion, two hundred twenty-two million, twenty-two thousand, two hundred twenty-five".