7918837225 has 36 divisors (see below), whose sum is σ = 10651465956. Its totient is φ = 5837495040.

The previous prime is 7918837217. The next prime is 7918837243. The reversal of 7918837225 is 5227388197.

It can be written as a sum of positive squares in 18 ways, for example, as 5852862016 + 2065975209 = 76504^2 + 45453^2 .

It is not a de Polignac number, because 7918837225 - 2³ = 7918837217 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 3095647 + ... + 3098203.

Almost surely, 2^7918837225 is an apocalyptic number.

It is an amenable number.

7918837225 is a deficient number, since it is larger than the sum of its proper divisors (2732628731).

7918837225 is a wasteful number, since it uses less digits than its factorization.

7918837225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3326 (or 3308 counting only the distinct ones).

The product of its digits is 1693440, while the sum is 52.

The square root of 7918837225 is about 88987.8487491410. The cubic root of 7918837225 is about 1993.2134327166.

The spelling of 7918837225 in words is "seven billion, nine hundred eighteen million, eight hundred thirty-seven thousand, two hundred twenty-five".