225261365613 has 16 divisors (see below), whose sum is σ = 310731928320. Its totient is φ = 144983409984.

The previous prime is 225261365599. The next prime is 225261365617. The reversal of 225261365613 is 316563162522.

It is a happy number.

It is not a de Polignac number, because 225261365613 - 2¹² = 225261361517 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225261365617) 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, 971820 + ... + 1181082.

It is an arithmetic number, because the mean of its divisors is an integer number (19420745520).

Almost surely, 2^225261365613 is an apocalyptic number.

It is an amenable number.

225261365613 is a deficient number, since it is larger than the sum of its proper divisors (85470562707).

225261365613 is a wasteful number, since it uses less digits than its factorization.

225261365613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221668.

The product of its digits is 388800, while the sum is 42.

The spelling of 225261365613 in words is "two hundred twenty-five billion, two hundred sixty-one million, three hundred sixty-five thousand, six hundred thirteen".