40635425220 has 48 divisors (see below), whose sum is σ = 122531438400. Its totient is φ = 10002566016.

The previous prime is 40635425213. The next prime is 40635425249. The reversal of 40635425220 is 2252453604.

It is a happy number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 26047570 + ... + 26049129.

It is an arithmetic number, because the mean of its divisors is an integer number (2552738300).

Almost surely, 2^40635425220 is an apocalyptic number.

It is an amenable number.

40635425220 is an abundant number, since it is smaller than the sum of its proper divisors (81896013180).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40635425220 is a wasteful number, since it uses less digits than its factorization.

40635425220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52096724 (or 52096722 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 33.

Adding to 40635425220 its reverse (2252453604), we get a palindrome (42887878824).

The spelling of 40635425220 in words is "forty billion, six hundred thirty-five million, four hundred twenty-five thousand, two hundred twenty".