4642378225 has 9 divisors (see below), whose sum is σ = 5756971467. Its totient is φ = 3713630040.

The previous prime is 4642378219. The next prime is 4642378229. The reversal of 4642378225 is 5228732464.

The square root of 4642378225 is 68135.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1671256161 + 2971122064 = 40881^2 + 54508^2 .

It is a de Polignac number, because none of the positive numbers 2^k-4642378225 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4642378229) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 333862 + ... + 347488.

Almost surely, 2^4642378225 is an apocalyptic number.

4642378225 is the 68135-th square number.

4642378225 is the 34068-th centered octagonal number.

It is an amenable number.

4642378225 is a deficient number, since it is larger than the sum of its proper divisors (1114593242).

4642378225 is an frugal number, since it uses more digits than its factorization.

4642378225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27264 (or 13632 counting only the distinct ones).

The product of its digits is 645120, while the sum is 43.

The cubic root of 4642378225 is about 1668.1950960249.

The spelling of 4642378225 in words is "four billion, six hundred forty-two million, three hundred seventy-eight thousand, two hundred twenty-five".