42225420243251 has 8 divisors (see below), whose sum is σ = 51096306849120. Its totient is φ = 34064204565888.

The previous prime is 42225420243233. The next prime is 42225420243263. The reversal of 42225420243251 is 15234202452224.

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

It is not a de Polignac number, because 42225420243251 - 2²² = 42225416048947 is a prime.

It is a super-2 number, since 2×42225420243251² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42225420243221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 177417731996 + ... + 177417732233.

It is an arithmetic number, because the mean of its divisors is an integer number (6387038356140).

Almost surely, 2^{42225420243251} is an apocalyptic number.

42225420243251 is a deficient number, since it is larger than the sum of its proper divisors (8870886605869).

42225420243251 is a wasteful number, since it uses less digits than its factorization.

42225420243251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354835464253.

The product of its (nonzero) digits is 307200, while the sum is 38.

Adding to 42225420243251 its reverse (15234202452224), we get a palindrome (57459622695475).

The spelling of 42225420243251 in words is "forty-two trillion, two hundred twenty-five billion, four hundred twenty million, two hundred forty-three thousand, two hundred fifty-one".