4218998125 has 10 divisors (see below), whose sum is σ = 5272060838. Its totient is φ = 3375198000.

The previous prime is 4218998093. The next prime is 4218998129. The reversal of 4218998125 is 5218998124.

It can be written as a sum of positive squares in 5 ways, for example, as 582063876 + 3636934249 = 24126^2 + 60307^2 .

It is not a de Polignac number, because 4218998125 - 2⁵ = 4218998093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4218998129) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 3374574 + ... + 3375823.

Almost surely, 2^4218998125 is an apocalyptic number.

It is an amenable number.

4218998125 is a deficient number, since it is larger than the sum of its proper divisors (1053062713).

4218998125 is an frugal number, since it uses more digits than its factorization.

4218998125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6750417 (or 6750402 counting only the distinct ones).

The product of its digits is 414720, while the sum is 49.

The square root of 4218998125 is about 64953.8153228892. The cubic root of 4218998125 is about 1615.8576950722.

Subtracting 4218998125 from its reverse (5218998124), we obtain a palindrome (999999999).

The spelling of 4218998125 in words is "four billion, two hundred eighteen million, nine hundred ninety-eight thousand, one hundred twenty-five".