225340645631 has 4 divisors (see below), whose sum is σ = 225402234600. Its totient is φ = 225279056664.

The previous prime is 225340645613. The next prime is 225340645661. The reversal of 225340645631 is 136546043522.

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 225340645631 - 2¹⁴ = 225340629247 is a prime.

It is a super-2 number, since 2×225340645631² (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 (225340645661) 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, 30788996 + ... + 30796313.

It is an arithmetic number, because the mean of its divisors is an integer number (56350558650).

Almost surely, 2^225340645631 is an apocalyptic number.

225340645631 is a deficient number, since it is larger than the sum of its proper divisors (61588969).

225340645631 is an equidigital number, since it uses as much as digits as its factorization.

225340645631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61588968.

The product of its (nonzero) digits is 518400, while the sum is 41.

The spelling of 225340645631 in words is "two hundred twenty-five billion, three hundred forty million, six hundred forty-five thousand, six hundred thirty-one".