225684031 has 4 divisors (see below), whose sum is σ = 225746064. Its totient is φ = 225622000.

The previous prime is 225684007. The next prime is 225684037. The reversal of 225684031 is 130486522.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 130486522 = 2 ⋅65243261.

It is a cyclic number.

It is not a de Polignac number, because 225684031 - 2⁷ = 225683903 is a prime.

It is a super-2 number, since 2×225684031² = 101866563696817922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 225683984 and 225684002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225684037) 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, 25195 + ... + 32956.

It is an arithmetic number, because the mean of its divisors is an integer number (56436516).

Almost surely, 2^225684031 is an apocalyptic number.

225684031 is a deficient number, since it is larger than the sum of its proper divisors (62033).

225684031 is an equidigital number, since it uses as much as digits as its factorization.

225684031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62032.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 225684031 is about 15022.7837300548. The cubic root of 225684031 is about 608.8359337413.

The spelling of 225684031 in words is "two hundred twenty-five million, six hundred eighty-four thousand, thirty-one".