204025520 has 20 divisors (see below), whose sum is σ = 474359520. Its totient is φ = 81610176.

The previous prime is 204025513. The next prime is 204025531. The reversal of 204025520 is 25520402.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×204025520² = 83252825622540800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a plaindrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 204025492 and 204025501.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1275080 + ... + 1275239.

It is an arithmetic number, because the mean of its divisors is an integer number (23717976).

Almost surely, 2^204025520 is an apocalyptic number.

204025520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204025520 is an abundant number, since it is smaller than the sum of its proper divisors (270334000).

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

204025520 is a wasteful number, since it uses less digits than its factorization.

204025520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2550332 (or 2550326 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 20.

The square root of 204025520 is about 14283.7502078411. The cubic root of 204025520 is about 588.7010780914.

Adding to 204025520 its reverse (25520402), we get a palindrome (229545922).

The spelling of 204025520 in words is "two hundred four million, twenty-five thousand, five hundred twenty".