84642225 has 24 divisors (see below), whose sum is σ = 140220192. Its totient is φ = 45052800.

The previous prime is 84642211. The next prime is 84642251. The reversal of 84642225 is 52224648.

It is not a de Polignac number, because 84642225 - 2⁴ = 84642209 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 56334 + ... + 57816.

It is an arithmetic number, because the mean of its divisors is an integer number (5842508).

Almost surely, 2^84642225 is an apocalyptic number.

It is an amenable number.

84642225 is a deficient number, since it is larger than the sum of its proper divisors (55577967).

84642225 is a wasteful number, since it uses less digits than its factorization.

84642225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2257 (or 2252 counting only the distinct ones).

The product of its digits is 30720, while the sum is 33.

The square root of 84642225 is about 9200.1209231183. The cubic root of 84642225 is about 439.0652072164.

It can be divided in two parts, 846 and 42225, that added together give a triangular number (43071 = T₂₉₃).

The spelling of 84642225 in words is "eighty-four million, six hundred forty-two thousand, two hundred twenty-five".