225657115613 has 4 divisors (see below), whose sum is σ = 225658067868. Its totient is φ = 225656163360.

The previous prime is 225657115577. The next prime is 225657115639. The reversal of 225657115613 is 316511756522.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 221274278404 + 4382837209 = 470398^2 + 66203^2 .

It is a cyclic number.

It is not a de Polignac number, because 225657115613 - 2⁸ = 225657115357 is a prime.

It is a super-2 number, since 2×225657115613² (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 (225657117613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 189695 + ... + 698067.

It is an arithmetic number, because the mean of its divisors is an integer number (56414516967).

Almost surely, 2^225657115613 is an apocalyptic number.

It is an amenable number.

225657115613 is a deficient number, since it is larger than the sum of its proper divisors (952255).

225657115613 is an equidigital number, since it uses as much as digits as its factorization.

225657115613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 952254.

The product of its digits is 378000, while the sum is 44.

The spelling of 225657115613 in words is "two hundred twenty-five billion, six hundred fifty-seven million, one hundred fifteen thousand, six hundred thirteen".