4225645640 has 16 divisors (see below), whose sum is σ = 9507702780. Its totient is φ = 1690258240.

The previous prime is 4225645637. The next prime is 4225645649. The reversal of 4225645640 is 465465224.

It can be written as a sum of positive squares in 2 ways, for example, as 4172384836 + 53260804 = 64594^2 + 7298^2 .

It is a junction number, because it is equal to n+sod(n) for n = 4225645594 and 4225645603.

It is not an unprimeable number, because it can be changed into a prime (4225645649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52820531 + ... + 52820610.

Almost surely, 2^4225645640 is an apocalyptic number.

4225645640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4225645640 is an abundant number, since it is smaller than the sum of its proper divisors (5282057140).

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

4225645640 is a wasteful number, since it uses less digits than its factorization.

4225645640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105641152 (or 105641148 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 38.

The square root of 4225645640 is about 65004.9662718165. The cubic root of 4225645640 is about 1616.7059060633.

The spelling of 4225645640 in words is "four billion, two hundred twenty-five million, six hundred forty-five thousand, six hundred forty".