225055661556 has 48 divisors (see below), whose sum is σ = 573060858048. Its totient is φ = 68175840000.

The previous prime is 225055661527. The next prime is 225055661603. The reversal of 225055661556 is 655166550522.

It is a super-2 number, since 2×225055661556² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112066 + ... + 680198.

It is an arithmetic number, because the mean of its divisors is an integer number (11938767876).

Almost surely, 2^225055661556 is an apocalyptic number.

It is an amenable number.

225055661556 is an abundant number, since it is smaller than the sum of its proper divisors (348005196492).

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

225055661556 is a wasteful number, since it uses less digits than its factorization.

225055661556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571152 (or 571150 counting only the distinct ones).

The product of its (nonzero) digits is 2700000, while the sum is 48.

The spelling of 225055661556 in words is "two hundred twenty-five billion, fifty-five million, six hundred sixty-one thousand, five hundred fifty-six".