250128825 has 48 divisors (see below), whose sum is σ = 438067200. Its totient is φ = 125582400.

The previous prime is 250128757. The next prime is 250128829. The reversal of 250128825 is 528821052.

It is not a de Polignac number, because 250128825 - 2¹¹ = 250126777 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (250128829) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 271716 + ... + 272634.

It is an arithmetic number, because the mean of its divisors is an integer number (9126400).

Almost surely, 2^250128825 is an apocalyptic number.

250128825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

250128825 is a deficient number, since it is larger than the sum of its proper divisors (187938375).

250128825 is a wasteful number, since it uses less digits than its factorization.

250128825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1142 (or 1137 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 33.

The square root of 250128825 is about 15815.4615803650. The cubic root of 250128825 is about 630.0687125860.

Adding to 250128825 its reverse (528821052), we get a palindrome (778949877).

The spelling of 250128825 in words is "two hundred fifty million, one hundred twenty-eight thousand, eight hundred twenty-five".