223625659787172 has 144 divisors (see below), whose sum is σ = 614406600138240. Its totient is φ = 68320113997824.

The previous prime is 223625659787161. The next prime is 223625659787197. The reversal of 223625659787172 is 271787956526322.

It is a happy number.

223625659787172 is a `hidden beast` number, since 2 + 2 + 3 + 6 + 25 + 6 + 597 + 8 + 7 + 1 + 7 + 2 = 666.

It is a super-2 number, since 2×223625659787172² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 223625659787172.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 28150968 + ... + 35209775.

It is an arithmetic number, because the mean of its divisors is an integer number (4266712500960).

Almost surely, 2^{223625659787172} is an apocalyptic number.

It is an amenable number.

223625659787172 is an abundant number, since it is smaller than the sum of its proper divisors (390780940351068).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

223625659787172 is a wasteful number, since it uses less digits than its factorization.

223625659787172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63360922 (or 63360917 counting only the distinct ones).

The product of its digits is 1066867200, while the sum is 72.

The spelling of 223625659787172 in words is "two hundred twenty-three trillion, six hundred twenty-five billion, six hundred fifty-nine million, seven hundred eighty-seven thousand, one hundred seventy-two".