84678025 has 12 divisors (see below), whose sum is σ = 105458652. Its totient is φ = 67447040.

The previous prime is 84677959. The next prime is 84678031. The reversal of 84678025 is 52087648.

It can be written as a sum of positive squares in 6 ways, for example, as 15272464 + 69405561 = 3908^2 + 8331^2 .

It is not a de Polignac number, because 84678025 - 2⁷ = 84677897 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1444 + ... + 13093.

It is an arithmetic number, because the mean of its divisors is an integer number (8788221).

Almost surely, 2^84678025 is an apocalyptic number.

It is an amenable number.

84678025 is a deficient number, since it is larger than the sum of its proper divisors (20780627).

84678025 is a wasteful number, since it uses less digits than its factorization.

84678025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14780 (or 14775 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 40.

The square root of 84678025 is about 9202.0663440338. The cubic root of 84678025 is about 439.1271003549.

The spelling of 84678025 in words is "eighty-four million, six hundred seventy-eight thousand, twenty-five".