83209025 has 12 divisors (see below), whose sum is σ = 104245932. Its totient is φ = 65879040.

The previous prime is 83208989. The next prime is 83209039. The reversal of 83209025 is 52090238.

It can be written as a sum of positive squares in 6 ways, for example, as 5909761 + 77299264 = 2431^2 + 8792^2 .

It is not a de Polignac number, because 83209025 - 2¹² = 83204929 is a prime.

It is a Duffinian number.

It is a Curzon 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, 14732 + ... + 19581.

It is an arithmetic number, because the mean of its divisors is an integer number (8687161).

Almost surely, 2^83209025 is an apocalyptic number.

It is an amenable number.

83209025 is a deficient number, since it is larger than the sum of its proper divisors (21036907).

83209025 is a wasteful number, since it uses less digits than its factorization.

83209025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34420 (or 34415 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 83209025 is about 9121.8981029170. The cubic root of 83209025 is about 436.5729376229.

The spelling of 83209025 in words is "eighty-three million, two hundred nine thousand, twenty-five".