7918330225 has 45 divisors (see below), whose sum is σ = 10927451733. Its totient is φ = 5689344960.

The previous prime is 7918330213. The next prime is 7918330241. The reversal of 7918330225 is 5220338197.

The square root of 7918330225 is 88985.

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

It can be written as a sum of positive squares in 22 ways, for example, as 6841440369 + 1076889856 = 82713^2 + 32816^2 .

It is not a de Polignac number, because 7918330225 - 2¹⁷ = 7918199153 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 214008907 + ... + 214008943.

Almost surely, 2^7918330225 is an apocalyptic number.

7918330225 is the 88985-th square number.

7918330225 is the 44493-rd centered octagonal number.

It is an amenable number.

7918330225 is a deficient number, since it is larger than the sum of its proper divisors (3009121508).

7918330225 is an frugal number, since it uses more digits than its factorization.

7918330225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184 (or 55 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 40.

The cubic root of 7918330225 is about 1993.1708936102.

The spelling of 7918330225 in words is "seven billion, nine hundred eighteen million, three hundred thirty thousand, two hundred twenty-five".