83009025 has 54 divisors (see below), whose sum is σ = 163476950. Its totient is φ = 40233600.

The previous prime is 83009021. The next prime is 83009027. The reversal of 83009025 is 52090038.

It can be written as a sum of positive squares in 3 ways, for example, as 53361 + 82955664 = 231^2 + 9108^2 .

It is not a de Polignac number, because 83009025 - 2² = 83009021 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 83009025.

It is not an unprimeable number, because it can be changed into a prime (83009021) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 25701 + ... + 28749.

Almost surely, 2^83009025 is an apocalyptic number.

It is an amenable number.

83009025 is a deficient number, since it is larger than the sum of its proper divisors (80467925).

83009025 is a wasteful number, since it uses less digits than its factorization.

83009025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3087 (or 3068 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 83009025 is about 9110.9288769038. The cubic root of 83009025 is about 436.2228768889. Note that the first 3 decimals are identical.

The spelling of 83009025 in words is "eighty-three million, nine thousand, twenty-five".