250472221 has 4 divisors (see below), whose sum is σ = 250504000. Its totient is φ = 250440444.

The previous prime is 250472213. The next prime is 250472227. The reversal of 250472221 is 122274052.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 250472221 - 2³ = 250472213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (250472227) 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 3 ways as a sum of consecutive naturals, for example, 5830 + ... + 23128.

It is an arithmetic number, because the mean of its divisors is an integer number (62626000).

Almost surely, 2^250472221 is an apocalyptic number.

It is an amenable number.

250472221 is a deficient number, since it is larger than the sum of its proper divisors (31779).

250472221 is a wasteful number, since it uses less digits than its factorization.

250472221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31778.

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 250472221 is about 15826.3141950361. The cubic root of 250472221 is about 630.3569162584.

The spelling of 250472221 in words is "two hundred fifty million, four hundred seventy-two thousand, two hundred twenty-one".