84855825 has 18 divisors (see below), whose sum is σ = 151986614. Its totient is φ = 45256320.

The previous prime is 84855817. The next prime is 84855839. The reversal of 84855825 is 52855848.

It can be written as a sum of positive squares in 3 ways, for example, as 16842816 + 68013009 = 4104^2 + 8247^2 .

It is not a de Polignac number, because 84855825 - 2³ = 84855817 is a prime.

It is a super-2 number, since 2×84855825² = 14401022072861250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 188344 + ... + 188793.

Almost surely, 2^84855825 is an apocalyptic number.

It is an amenable number.

84855825 is a deficient number, since it is larger than the sum of its proper divisors (67130789).

84855825 is a wasteful number, since it uses less digits than its factorization.

84855825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377153 (or 377145 counting only the distinct ones).

The product of its digits is 512000, while the sum is 45.

The square root of 84855825 is about 9211.7221516935. The cubic root of 84855825 is about 439.4342332293.

The spelling of 84855825 in words is "eighty-four million, eight hundred fifty-five thousand, eight hundred twenty-five".