7873900225 has 9 divisors (see below), whose sum is σ = 9764186467. Its totient is φ = 6298765240.

The previous prime is 7873900207. The next prime is 7873900241. The reversal of 7873900225 is 5220093787.

The square root of 7873900225 is 88735.

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., 2834604081 + 5039296144 = 53241^2 + 70988^2 .

It is a de Polignac number, because none of the positive numbers 2^k-7873900225 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 434802 + ... + 452548.

Almost surely, 2^7873900225 is an apocalyptic number.

7873900225 is the 88735-th square number.

7873900225 is the 44368-th centered octagonal number.

It is an amenable number.

7873900225 is a deficient number, since it is larger than the sum of its proper divisors (1890286242).

7873900225 is an frugal number, since it uses more digits than its factorization.

7873900225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35504 (or 17752 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 43.

The cubic root of 7873900225 is about 1989.4359844483.

The spelling of 7873900225 in words is "seven billion, eight hundred seventy-three million, nine hundred thousand, two hundred twenty-five".