84555225 has 72 divisors (see below), whose sum is σ = 164409120. Its totient is φ = 42599520.

The previous prime is 84555223. The next prime is 84555227. The reversal of 84555225 is 52255548.

It is a happy number.

84555225 is a `hidden beast` number, since 84 + 5 + 552 + 25 = 666.

It is an interprime number because it is at equal distance from previous prime (84555223) and next prime (84555227).

It is not a de Polignac number, because 84555225 - 2¹ = 84555223 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 84555225.

It is not an unprimeable number, because it can be changed into a prime (84555221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 243502 + ... + 243848.

It is an arithmetic number, because the mean of its divisors is an integer number (2283460).

Almost surely, 2^84555225 is an apocalyptic number.

It is an amenable number.

84555225 is a deficient number, since it is larger than the sum of its proper divisors (79853895).

84555225 is a wasteful number, since it uses less digits than its factorization.

84555225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404 (or 374 counting only the distinct ones).

The product of its digits is 80000, while the sum is 36.

The square root of 84555225 is about 9195.3915087940. The cubic root of 84555225 is about 438.9147237429.

The spelling of 84555225 in words is "eighty-four million, five hundred fifty-five thousand, two hundred twenty-five".