83525421 has 8 divisors (see below), whose sum is σ = 127276864. Its totient is φ = 47728800.

The previous prime is 83525417. The next prime is 83525441. The reversal of 83525421 is 12452538.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 83525421 - 2² = 83525417 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83525411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1988680 + ... + 1988721.

It is an arithmetic number, because the mean of its divisors is an integer number (15909608).

Almost surely, 2^83525421 is an apocalyptic number.

It is an amenable number.

83525421 is a deficient number, since it is larger than the sum of its proper divisors (43751443).

83525421 is a wasteful number, since it uses less digits than its factorization.

83525421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3977411.

The product of its digits is 9600, while the sum is 30.

The square root of 83525421 is about 9139.2243106294. The cubic root of 83525421 is about 437.1255828994.

Adding to 83525421 its reverse (12452538), we get a palindrome (95977959).

The spelling of 83525421 in words is "eighty-three million, five hundred twenty-five thousand, four hundred twenty-one".