42225657218 has 8 divisors (see below), whose sum is σ = 63341890812. Its totient is φ = 21111693616.

The previous prime is 42225657217. The next prime is 42225657241. The reversal of 42225657218 is 81275652224.

It can be written as a sum of positive squares in 2 ways, for example, as 41981141449 + 244515769 = 204893^2 + 15637^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×42225657218² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42225657217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 520205 + ... + 595872.

Almost surely, 2^42225657218 is an apocalyptic number.

42225657218 is a deficient number, since it is larger than the sum of its proper divisors (21116233594).

42225657218 is a wasteful number, since it uses less digits than its factorization.

42225657218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1134996.

The product of its digits is 537600, while the sum is 44.

The spelling of 42225657218 in words is "forty-two billion, two hundred twenty-five million, six hundred fifty-seven thousand, two hundred eighteen".