84486142225 has 27 divisors (see below), whose sum is σ = 106620272499. Its totient is φ = 66411139200.

The previous prime is 84486142219. The next prime is 84486142231. The reversal of 84486142225 is 52224168448.

The square root of 84486142225 is 290665.

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

It is an interprime number because it is at equal distance from previous prime (84486142219) and next prime (84486142231).

It can be written as a sum of positive squares in 13 ways, for example, as 84318802129 + 167340096 = 290377^2 + 12936^2 .

It is not a de Polignac number, because 84486142225 - 2⁹ = 84486141713 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 88652349 + ... + 88653301.

Almost surely, 2^84486142225 is an apocalyptic number.

84486142225 is the 290665-th square number.

84486142225 is the 145333-rd centered octagonal number.

It is an amenable number.

84486142225 is a deficient number, since it is larger than the sum of its proper divisors (22134130274).

84486142225 is an frugal number, since it uses more digits than its factorization.

84486142225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2038 (or 1019 counting only the distinct ones).

The product of its digits is 983040, while the sum is 46.

The spelling of 84486142225 in words is "eighty-four billion, four hundred eighty-six million, one hundred forty-two thousand, two hundred twenty-five".