250505631 has 12 divisors (see below), whose sum is σ = 362653200. Its totient is φ = 166629120.

The previous prime is 250505621. The next prime is 250505663. The reversal of 250505631 is 136505052.

250505631 is a `hidden beast` number, since 2 + 50 + 50 + 563 + 1 = 666.

It is not a de Polignac number, because 250505631 - 2¹⁵ = 250472863 is a prime.

It is a super-2 number, since 2×250505631² = 125506142325416322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 250505595 and 250505604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (250505621) 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 11 ways as a sum of consecutive naturals, for example, 26955 + ... + 35036.

It is an arithmetic number, because the mean of its divisors is an integer number (30221100).

Almost surely, 2^250505631 is an apocalyptic number.

250505631 is a deficient number, since it is larger than the sum of its proper divisors (112147569).

250505631 is a wasteful number, since it uses less digits than its factorization.

250505631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62446 (or 62443 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 250505631 is about 15827.3696803986. The cubic root of 250505631 is about 630.3849423714.

The spelling of 250505631 in words is "two hundred fifty million, five hundred five thousand, six hundred thirty-one".