223646313525 has 12 divisors (see below), whose sum is σ = 369761905152. Its totient is φ = 119278033840.

The previous prime is 223646313523. The next prime is 223646313529. The reversal of 223646313525 is 525313646322.

223646313525 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 223646313525 - 2¹ = 223646313523 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223646313521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1490975349 + ... + 1490975498.

It is an arithmetic number, because the mean of its divisors is an integer number (30813492096).

Almost surely, 2^223646313525 is an apocalyptic number.

223646313525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

223646313525 is a deficient number, since it is larger than the sum of its proper divisors (146115591627).

223646313525 is a wasteful number, since it uses less digits than its factorization.

223646313525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2981950860 (or 2981950855 counting only the distinct ones).

The product of its digits is 777600, while the sum is 42.

Adding to 223646313525 its reverse (525313646322), we get a palindrome (748959959847).

The spelling of 223646313525 in words is "two hundred twenty-three billion, six hundred forty-six million, three hundred thirteen thousand, five hundred twenty-five".