221625405512 has 16 divisors (see below), whose sum is σ = 474911583360. Its totient is φ = 94982316624.

The previous prime is 221625405511. The next prime is 221625405539. The reversal of 221625405512 is 215504526122.

It is not an unprimeable number, because it can be changed into a prime (221625405511) 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, 1978798208 + ... + 1978798319.

It is an arithmetic number, because the mean of its divisors is an integer number (29681973960).

Almost surely, 2^221625405512 is an apocalyptic number.

It is an amenable number.

221625405512 is an abundant number, since it is smaller than the sum of its proper divisors (253286177848).

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

221625405512 is a wasteful number, since it uses less digits than its factorization.

221625405512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3957596540 (or 3957596536 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 35.

The spelling of 221625405512 in words is "two hundred twenty-one billion, six hundred twenty-five million, four hundred five thousand, five hundred twelve".