83670025 has 6 divisors (see below), whose sum is σ = 103750862. Its totient is φ = 66936000.

The previous prime is 83670007. The next prime is 83670043. The reversal of 83670025 is 52007638.

It is an interprime number because it is at equal distance from previous prime (83670007) and next prime (83670043).

It can be written as a sum of positive squares in 3 ways, for example, as 440896 + 83229129 = 664^2 + 9123^2 .

It is not a de Polignac number, because 83670025 - 2⁷ = 83669897 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 (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1673376 + ... + 1673425.

Almost surely, 2^83670025 is an apocalyptic number.

It is an amenable number.

83670025 is a deficient number, since it is larger than the sum of its proper divisors (20080837).

83670025 is a wasteful number, since it uses less digits than its factorization.

83670025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3346811 (or 3346806 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 83670025 is about 9147.1320642046. The cubic root of 83670025 is about 437.3776964253.

The spelling of 83670025 in words is "eighty-three million, six hundred seventy thousand, twenty-five".