225612225647 has 16 divisors (see below), whose sum is σ = 239851901952. Its totient is φ = 211481356800.

The previous prime is 225612225607. The next prime is 225612225689. The reversal of 225612225647 is 746522216522.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 225612225647 - 2⁶ = 225612225583 is a prime.

It is a super-2 number, since 2×225612225647² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 225612225598 and 225612225607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225612225607) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6184553 + ... + 6220925.

It is an arithmetic number, because the mean of its divisors is an integer number (14990743872).

Almost surely, 2^225612225647 is an apocalyptic number.

225612225647 is a deficient number, since it is larger than the sum of its proper divisors (14239676305).

225612225647 is a wasteful number, since it uses less digits than its factorization.

225612225647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37858.

The product of its digits is 806400, while the sum is 44.

The spelling of 225612225647 in words is "two hundred twenty-five billion, six hundred twelve million, two hundred twenty-five thousand, six hundred forty-seven".