83525905 has 4 divisors (see below), whose sum is σ = 100231092. Its totient is φ = 66820720.

The previous prime is 83525867. The next prime is 83525921. The reversal of 83525905 is 50952538.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 64577296 + 18948609 = 8036^2 + 4353^2 .

It is a de Polignac number, because none of the positive numbers 2^k-83525905 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 (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8352586 + ... + 8352595.

It is an arithmetic number, because the mean of its divisors is an integer number (25057773).

Almost surely, 2^83525905 is an apocalyptic number.

It is an amenable number.

83525905 is a deficient number, since it is larger than the sum of its proper divisors (16705187).

83525905 is a wasteful number, since it uses less digits than its factorization.

83525905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16705186.

The product of its (nonzero) digits is 54000, while the sum is 37.

The square root of 83525905 is about 9139.2507898624. The cubic root of 83525905 is about 437.1264272267.

The spelling of 83525905 in words is "eighty-three million, five hundred twenty-five thousand, nine hundred five".