505025040 has 160 divisors (see below), whose sum is σ = 1698391296. Its totient is φ = 123402240.

The previous prime is 505025033. The next prime is 505025041. The reversal of 505025040 is 40520505.

It is a junction number, because it is equal to n+sod(n) for n = 505024998 and 505025016.

It is not an unprimeable number, because it can be changed into a prime (505025041) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 489325 + ... + 490355.

Almost surely, 2^505025040 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 505025040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (849195648).

505025040 is an abundant number, since it is smaller than the sum of its proper divisors (1193366256).

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

505025040 is a wasteful number, since it uses less digits than its factorization.

505025040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1217 (or 1211 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 21.

The square root of 505025040 is about 22472.7621800258. The cubic root of 505025040 is about 796.3505858684.

Adding to 505025040 its reverse (40520505), we get a palindrome (545545545).

The spelling of 505025040 in words is "five hundred five million, twenty-five thousand, forty".