225212555555 has 16 divisors (see below), whose sum is σ = 291907578144. Its totient is φ = 165817290240.

The previous prime is 225212555507. The next prime is 225212555587. The reversal of 225212555555 is 555555212522.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-225212555555 is a prime.

It is a super-2 number, since 2×225212555555² (a number of 24 digits) contains 22 as substring.

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, 5118761 + ... + 5162570.

It is an arithmetic number, because the mean of its divisors is an integer number (18244223634).

Almost surely, 2^225212555555 is an apocalyptic number.

225212555555 is a deficient number, since it is larger than the sum of its proper divisors (66695022589).

225212555555 is a wasteful number, since it uses less digits than its factorization.

225212555555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10281686.

The product of its digits is 1250000, while the sum is 44.

The spelling of 225212555555 in words is "two hundred twenty-five billion, two hundred twelve million, five hundred fifty-five thousand, five hundred fifty-five".