83525489 has 4 divisors (see below), whose sum is σ = 87157056. Its totient is φ = 79893924.

The previous prime is 83525467. The next prime is 83525513. The reversal of 83525489 is 98452538.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 83525489 - 2²⁰ = 82476913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83525459) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1815749 + ... + 1815794.

It is an arithmetic number, because the mean of its divisors is an integer number (21789264).

Almost surely, 2^83525489 is an apocalyptic number.

It is an amenable number.

83525489 is a deficient number, since it is larger than the sum of its proper divisors (3631567).

83525489 is a wasteful number, since it uses less digits than its factorization.

83525489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3631566.

The product of its digits is 345600, while the sum is 44.

The square root of 83525489 is about 9139.2280308569. The cubic root of 83525489 is about 437.1257015241.

The spelling of 83525489 in words is "eighty-three million, five hundred twenty-five thousand, four hundred eighty-nine".