42246540225 has 72 divisors (see below), whose sum is σ = 78779020320. Its totient is φ = 22442987520.

The previous prime is 42246540209. The next prime is 42246540229. The reversal of 42246540225 is 52204564224.

42246540225 is a `hidden beast` number, since 4 + 2 + 246 + 5 + 402 + 2 + 5 = 666.

It is not a de Polignac number, because 42246540225 - 2⁴ = 42246540209 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42246540225.

It is not an unprimeable number, because it can be changed into a prime (42246540229) by changing a digit.

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 71 ways as a sum of consecutive naturals, for example, 1547746 + ... + 1574804.

It is an arithmetic number, because the mean of its divisors is an integer number (1094153060).

Almost surely, 2^42246540225 is an apocalyptic number.

42246540225 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

42246540225 is a deficient number, since it is larger than the sum of its proper divisors (36532480095).

42246540225 is a wasteful number, since it uses less digits than its factorization.

42246540225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27341 (or 27324 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 36.

The spelling of 42246540225 in words is "forty-two billion, two hundred forty-six million, five hundred forty thousand, two hundred twenty-five".