83288725 has 24 divisors (see below), whose sum is σ = 115070760. Its totient is φ = 59377920.

The previous prime is 83288717. The next prime is 83288743. The reversal of 83288725 is 52788238.

It can be written as a sum of positive squares in 12 ways, for example, as 9036036 + 74252689 = 3006^2 + 8617^2 .

It is not a de Polignac number, because 83288725 - 2³ = 83288717 is a prime.

It is a super-3 number, since 3×83288725³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5007 + ... + 13843.

It is an arithmetic number, because the mean of its divisors is an integer number (4794615).

Almost surely, 2^83288725 is an apocalyptic number.

It is an amenable number.

83288725 is a deficient number, since it is larger than the sum of its proper divisors (31782035).

83288725 is a wasteful number, since it uses less digits than its factorization.

83288725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8889 (or 8884 counting only the distinct ones).

The product of its digits is 215040, while the sum is 43.

The square root of 83288725 is about 9126.2656656488. The cubic root of 83288725 is about 436.7122805202.

The spelling of 83288725 in words is "eighty-three million, two hundred eighty-eight thousand, seven hundred twenty-five".