501128025 has 24 divisors (see below), whose sum is σ = 864557760. Its totient is φ = 255647040.

The previous prime is 501127999. The next prime is 501128029. The reversal of 501128025 is 520821105.

It is not a de Polignac number, because 501128025 - 2⁷ = 501127897 is a prime.

It is a super-2 number, since 2×501128025² = 502258594880801250, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 501127986 and 501128004.

It is not an unprimeable number, because it can be changed into a prime (501128029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 143530 + ... + 146979.

It is an arithmetic number, because the mean of its divisors is an integer number (36023240).

Almost surely, 2^501128025 is an apocalyptic number.

It is an amenable number.

501128025 is a deficient number, since it is larger than the sum of its proper divisors (363429735).

501128025 is a wasteful number, since it uses less digits than its factorization.

501128025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290545 (or 290540 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 24.

The square root of 501128025 is about 22385.8889705100. Note that the first 3 decimals coincide. The cubic root of 501128025 is about 794.2969537090.

The spelling of 501128025 in words is "five hundred one million, one hundred twenty-eight thousand, twenty-five".