225839531 has 4 divisors (see below), whose sum is σ = 226231512. Its totient is φ = 225447552.

The previous prime is 225839479. The next prime is 225839533. The reversal of 225839531 is 135938522.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 225839531 - 2¹⁰ = 225838507 is a prime.

It is a super-2 number, since 2×225839531² = 102006987524599922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225839533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 195125 + ... + 196278.

It is an arithmetic number, because the mean of its divisors is an integer number (56557878).

Almost surely, 2^225839531 is an apocalyptic number.

225839531 is a deficient number, since it is larger than the sum of its proper divisors (391981).

225839531 is an equidigital number, since it uses as much as digits as its factorization.

225839531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391980.

The product of its digits is 64800, while the sum is 38.

The square root of 225839531 is about 15027.9583110947. The cubic root of 225839531 is about 608.9757342869.

The spelling of 225839531 in words is "two hundred twenty-five million, eight hundred thirty-nine thousand, five hundred thirty-one".