7894225 has 12 divisors (see below), whose sum is σ = 9828364. Its totient is φ = 6289920.

The previous prime is 7894219. The next prime is 7894247. The reversal of 7894225 is 5224987.

It can be written as a sum of positive squares in 6 ways, for example, as 2076481 + 5817744 = 1441^2 + 2412^2 .

It is not a de Polignac number, because 7894225 - 2³ = 7894217 is a prime.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7957 + ... + 8893.

Almost surely, 2^7894225 is an apocalyptic number.

It is an amenable number.

7894225 is a deficient number, since it is larger than the sum of its proper divisors (1934139).

7894225 is a wasteful number, since it uses less digits than its factorization.

7894225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1284 (or 1279 counting only the distinct ones).

The product of its digits is 40320, while the sum is 37.

The square root of 7894225 is about 2809.6663502986. Note that the first 3 decimals coincide. The cubic root of 7894225 is about 199.1146280326.

The spelling of 7894225 in words is "seven million, eight hundred ninety-four thousand, two hundred twenty-five".