83525420 has 96 divisors (see below), whose sum is σ = 211631616. Its totient is φ = 27315200.

The previous prime is 83525417. The next prime is 83525441. The reversal of 83525420 is 2452538.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 85535 + ... + 86505.

It is an arithmetic number, because the mean of its divisors is an integer number (2204496).

Almost surely, 2^83525420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 83525420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105815808).

83525420 is an abundant number, since it is smaller than the sum of its proper divisors (128106196).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

83525420 is a wasteful number, since it uses less digits than its factorization.

83525420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1031 (or 1029 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 83525420 is about 9139.2242559202. The cubic root of 83525420 is about 437.1255811549.

Adding to 83525420 its reverse (2452538), we get a palindrome (85977958).

The spelling of 83525420 in words is "eighty-three million, five hundred twenty-five thousand, four hundred twenty".