42225452521 has 12 divisors (see below), whose sum is σ = 49741173120. Its totient is φ = 35735099400.

The previous prime is 42225452473. The next prime is 42225452531. The reversal of 42225452521 is 12525452224.

It is a de Polignac number, because none of the positive numbers 2^k-42225452521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42225452531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5450205 + ... + 5457946.

It is an arithmetic number, because the mean of its divisors is an integer number (4145097760).

Almost surely, 2^42225452521 is an apocalyptic number.

It is an amenable number.

42225452521 is a deficient number, since it is larger than the sum of its proper divisors (7515720599).

42225452521 is a wasteful number, since it uses less digits than its factorization.

42225452521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10908244 (or 10908237 counting only the distinct ones).

The product of its digits is 64000, while the sum is 34.

The spelling of 42225452521 in words is "forty-two billion, two hundred twenty-five million, four hundred fifty-two thousand, five hundred twenty-one".