84231025 has 12 divisors (see below), whose sum is σ = 105213132. Its totient is φ = 66890240.

The previous prime is 84231019. The next prime is 84231029. The reversal of 84231025 is 52013248.

It can be written as a sum of positive squares in 6 ways, for example, as 8958049 + 75272976 = 2993^2 + 8676^2 .

It is not a de Polignac number, because 84231025 - 2⁷ = 84230897 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84231029) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 8872 + ... + 15721.

It is an arithmetic number, because the mean of its divisors is an integer number (8767761).

Almost surely, 2^84231025 is an apocalyptic number.

It is an amenable number.

84231025 is a deficient number, since it is larger than the sum of its proper divisors (20982107).

84231025 is a wasteful number, since it uses less digits than its factorization.

84231025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24740 (or 24735 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 84231025 is about 9177.7461830234. The cubic root of 84231025 is about 438.3530458380.

The spelling of 84231025 in words is "eighty-four million, two hundred thirty-one thousand, twenty-five".