225105031 has 2 divisors, whose sum is σ = 225105032. Its totient is φ = 225105030.

The previous prime is 225104993. The next prime is 225105037. The reversal of 225105031 is 130501522.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 225105031 - 2⁷ = 225104903 is a prime.

It is a super-2 number, since 2×225105031² = 101344549963021922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225105037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112552515 + 112552516.

It is an arithmetic number, because the mean of its divisors is an integer number (112552516).

Almost surely, 2^225105031 is an apocalyptic number.

225105031 is a deficient number, since it is larger than the sum of its proper divisors (1).

225105031 is an equidigital number, since it uses as much as digits as its factorization.

225105031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 225105031 is about 15003.5006248542. The cubic root of 225105031 is about 608.3148247992.

Adding to 225105031 its reverse (130501522), we get a palindrome (355606553).

The spelling of 225105031 in words is "two hundred twenty-five million, one hundred five thousand, thirty-one".