225213535031 has 4 divisors (see below), whose sum is σ = 237066879000. Its totient is φ = 213360191064.

The previous prime is 225213534979. The next prime is 225213535109. The reversal of 225213535031 is 130535312522.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 130535312522 = 2 ⋅65267656261.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225213535031 is a prime.

It is a super-2 number, since 2×225213535031² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225213535831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5926671956 + ... + 5926671993.

It is an arithmetic number, because the mean of its divisors is an integer number (59266719750).

Almost surely, 2^225213535031 is an apocalyptic number.

225213535031 is a deficient number, since it is larger than the sum of its proper divisors (11853343969).

225213535031 is a wasteful number, since it uses less digits than its factorization.

225213535031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11853343968.

The product of its (nonzero) digits is 27000, while the sum is 32.

Adding to 225213535031 its reverse (130535312522), we get a palindrome (355748847553).

The spelling of 225213535031 in words is "two hundred twenty-five billion, two hundred thirteen million, five hundred thirty-five thousand, thirty-one".