84689025 has 12 divisors (see below), whose sum is σ = 140019312. Its totient is φ = 45167440.

The previous prime is 84689021. The next prime is 84689029. The reversal of 84689025 is 52098648.

It is an interprime number because it is at equal distance from previous prime (84689021) and next prime (84689029).

It is not a de Polignac number, because 84689025 - 2² = 84689021 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (84689021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 564519 + ... + 564668.

It is an arithmetic number, because the mean of its divisors is an integer number (11668276).

Almost surely, 2^84689025 is an apocalyptic number.

It is an amenable number.

84689025 is a deficient number, since it is larger than the sum of its proper divisors (55330287).

84689025 is a wasteful number, since it uses less digits than its factorization.

84689025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1129200 (or 1129195 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 42.

The square root of 84689025 is about 9202.6640164683. The cubic root of 84689025 is about 439.1461142960.

The spelling of 84689025 in words is "eighty-four million, six hundred eighty-nine thousand, twenty-five".