4220664425 has 12 divisors (see below), whose sum is σ = 5239011036. Its totient is φ = 3373056000.

The previous prime is 4220664419. The next prime is 4220664479. The reversal of 4220664425 is 5244660224.

It can be written as a sum of positive squares in 6 ways, for example, as 823173481 + 3397490944 = 28691^2 + 58288^2 .

It is a de Polignac number, because none of the positive numbers 2^k-4220664425 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 61976 + ... + 110825.

It is an arithmetic number, because the mean of its divisors is an integer number (436584253).

Almost surely, 2^4220664425 is an apocalyptic number.

It is an amenable number.

4220664425 is a deficient number, since it is larger than the sum of its proper divisors (1018346611).

4220664425 is a wasteful number, since it uses less digits than its factorization.

4220664425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173788 (or 173783 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 35.

The square root of 4220664425 is about 64966.6408628305. The cubic root of 4220664425 is about 1616.0703955922.

The spelling of 4220664425 in words is "four billion, two hundred twenty million, six hundred sixty-four thousand, four hundred twenty-five".