525005404 has 96 divisors (see below), whose sum is σ = 1197504000. Its totient is φ = 199543680.

The previous prime is 525005303. The next prime is 525005431. The reversal of 525005404 is 404500525.

It is a congruent number.

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, 648552 + ... + 649360.

It is an arithmetic number, because the mean of its divisors is an integer number (12474000).

Almost surely, 2^525005404 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 525005404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (598752000).

525005404 is an abundant number, since it is smaller than the sum of its proper divisors (672498596).

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

525005404 is a wasteful number, since it uses less digits than its factorization.

525005404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 888 (or 872 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 25.

The square root of 525005404 is about 22912.9963994236. The cubic root of 525005404 is about 806.7170909293.

Adding to 525005404 its reverse (404500525), we get a palindrome (929505929).

The spelling of 525005404 in words is "five hundred twenty-five million, five thousand, four hundred four".