250628531 has 12 divisors (see below), whose sum is σ = 259461720. Its totient is φ = 241950240.

The previous prime is 250628513. The next prime is 250628533. The reversal of 250628531 is 135826052.

It is a de Polignac number, because none of the positive numbers 2^k-250628531 is a prime.

It is a super-2 number, since 2×250628531² = 125629321102435922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (250628533) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 661100 + ... + 661478.

It is an arithmetic number, because the mean of its divisors is an integer number (21621810).

Almost surely, 2^250628531 is an apocalyptic number.

250628531 is a deficient number, since it is larger than the sum of its proper divisors (8833189).

250628531 is an equidigital number, since it uses as much as digits as its factorization.

250628531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 674 (or 547 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 250628531 is about 15831.2517193051. The cubic root of 250628531 is about 630.4880160930.

The spelling of 250628531 in words is "two hundred fifty million, six hundred twenty-eight thousand, five hundred thirty-one".