42226681625 has 16 divisors (see below), whose sum is σ = 52712944128. Its totient is φ = 33772342000.

The previous prime is 42226681621. The next prime is 42226681631. The reversal of 42226681625 is 52618662224.

It is a happy number.

It is not a de Polignac number, because 42226681625 - 2² = 42226681621 is a prime.

It is a super-2 number, since 2×42226681625² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42226681621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 447320 + ... + 533430.

It is an arithmetic number, because the mean of its divisors is an integer number (3294559008).

Almost surely, 2^42226681625 is an apocalyptic number.

It is an amenable number.

42226681625 is a deficient number, since it is larger than the sum of its proper divisors (10486262503).

42226681625 is an equidigital number, since it uses as much as digits as its factorization.

42226681625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90049 (or 90039 counting only the distinct ones).

The product of its digits is 552960, while the sum is 44.

The spelling of 42226681625 in words is "forty-two billion, two hundred twenty-six million, six hundred eighty-one thousand, six hundred twenty-five".