225311215647 has 32 divisors (see below), whose sum is σ = 343869580800. Its totient is φ = 128547619200.

The previous prime is 225311215643. The next prime is 225311215651. The reversal of 225311215647 is 746512113522.

It is an interprime number because it is at equal distance from previous prime (225311215643) and next prime (225311215651).

It is not a de Polignac number, because 225311215647 - 2² = 225311215643 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225311215643) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 58505272 + ... + 58509122.

It is an arithmetic number, because the mean of its divisors is an integer number (10745924400).

Almost surely, 2^225311215647 is an apocalyptic number.

225311215647 is a deficient number, since it is larger than the sum of its proper divisors (118558365153).

225311215647 is a wasteful number, since it uses less digits than its factorization.

225311215647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7503.

The product of its digits is 100800, while the sum is 39.

The spelling of 225311215647 in words is "two hundred twenty-five billion, three hundred eleven million, two hundred fifteen thousand, six hundred forty-seven".