8418980025 has 45 divisors (see below), whose sum is σ = 15602513311. Its totient is φ = 4487920560.

The previous prime is 8418979999. The next prime is 8418980029. The reversal of 8418980025 is 5200898148.

It is a happy number.

The square root of 8418980025 is 91755.

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., 3030832809 + 5388147216 = 55053^2 + 73404^2 .

It is a tau number, because it is divible by the number of its divisors (45).

It is not a de Polignac number, because 8418980025 - 2⁷ = 8418979897 is a prime.

It is a super-2 number, since 2×8418980025² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8418980029) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 4127956 + ... + 4129994.

Almost surely, 2^8418980025 is an apocalyptic number.

8418980025 is the 91755-th square number.

8418980025 is the 45878-th centered octagonal number.

It is an amenable number.

8418980025 is a deficient number, since it is larger than the sum of its proper divisors (7183533286).

8418980025 is an frugal number, since it uses more digits than its factorization.

8418980025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4100 (or 2047 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 45.

The cubic root of 8418980025 is about 2034.3226117878.

The spelling of 8418980025 in words is "eight billion, four hundred eighteen million, nine hundred eighty thousand, twenty-five".