225947655972 has 18 divisors (see below), whose sum is σ = 571145463798. Its totient is φ = 75315885312.

The previous prime is 225947655959. The next prime is 225947655991. The reversal of 225947655972 is 279556749522.

225947655972 is a `hidden beast` number, since 2 + 2 + 5 + 9 + 4 + 7 + 6 + 559 + 72 = 666.

It can be written as a sum of positive squares in only one way, i.e., 214826688036 + 11120967936 = 463494^2 + 105456^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3138161853 + ... + 3138161924.

Almost surely, 2^225947655972 is an apocalyptic number.

It is an amenable number.

225947655972 is an abundant number, since it is smaller than the sum of its proper divisors (345197807826).

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

225947655972 is a wasteful number, since it uses less digits than its factorization.

225947655972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6276323787 (or 6276323782 counting only the distinct ones).

The product of its digits is 95256000, while the sum is 63.

The spelling of 225947655972 in words is "two hundred twenty-five billion, nine hundred forty-seven million, six hundred fifty-five thousand, nine hundred seventy-two".