994456225 has 81 divisors (see below), whose sum is σ = 1553088747. Its totient is φ = 629690880.

The previous prime is 994456217. The next prime is 994456231. The reversal of 994456225 is 522654499.

The square root of 994456225 is 31535.

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

It can be written as a sum of positive squares in 13 ways, for example, as 152992161 + 841464064 = 12369^2 + 29008^2 .

It is not a de Polignac number, because 994456225 - 2³ = 994456217 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 18763299 + ... + 18763351.

Almost surely, 2^994456225 is an apocalyptic number.

994456225 is the 31535-th square number.

994456225 is the 15768-th centered octagonal number.

It is an amenable number.

994456225 is a deficient number, since it is larger than the sum of its proper divisors (558632522).

994456225 is a wasteful number, since it uses less digits than its factorization.

994456225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164 (or 82 counting only the distinct ones).

The product of its digits is 777600, while the sum is 46.

The cubic root of 994456225 is about 998.1486496169.

The spelling of 994456225 in words is "nine hundred ninety-four million, four hundred fifty-six thousand, two hundred twenty-five".