83798525 has 36 divisors (see below), whose sum is σ = 114565212. Its totient is φ = 60549120.

The previous prime is 83798521. The next prime is 83798527. The reversal of 83798525 is 52589738.

It can be written as a sum of positive squares in 18 ways, for example, as 18156121 + 65642404 = 4261^2 + 8102^2 .

It is not a de Polignac number, because 83798525 - 2² = 83798521 is a prime.

It is a Duffinian number.

Its product of digits (604800) is a multiple of the sum of its prime factors (210).

It is a self number, because there is not a number n which added to its sum of digits gives 83798525.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83798521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1147889 + ... + 1147961.

It is an arithmetic number, because the mean of its divisors is an integer number (3182367).

Almost surely, 2^83798525 is an apocalyptic number.

83798525 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

83798525 is a deficient number, since it is larger than the sum of its proper divisors (30766687).

83798525 is a wasteful number, since it uses less digits than its factorization.

83798525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210 (or 132 counting only the distinct ones).

The product of its digits is 604800, while the sum is 47.

The square root of 83798525 is about 9154.1534289087. The cubic root of 83798525 is about 437.6014893803.

The spelling of 83798525 in words is "eighty-three million, seven hundred ninety-eight thousand, five hundred twenty-five".