83525643 has 6 divisors (see below), whose sum is σ = 120648164. Its totient is φ = 55683756.

The previous prime is 83525623. The next prime is 83525657. The reversal of 83525643 is 34652538.

It is a happy number.

83525643 is a `hidden beast` number, since 8 + 3 + 5 + 2 + 5 + 643 = 666.

It is not a de Polignac number, because 83525643 - 2⁶ = 83525579 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 83525598 and 83525607.

It is not an unprimeable number, because it can be changed into a prime (83525623) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 4640305 + ... + 4640322.

Almost surely, 2^83525643 is an apocalyptic number.

83525643 is a deficient number, since it is larger than the sum of its proper divisors (37122521).

83525643 is a wasteful number, since it uses less digits than its factorization.

83525643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9280633 (or 9280630 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

The square root of 83525643 is about 9139.2364560722. The cubic root of 83525643 is about 437.1259701739.

The spelling of 83525643 in words is "eighty-three million, five hundred twenty-five thousand, six hundred forty-three".