225655330551 has 32 divisors (see below), whose sum is σ = 345439331328. Its totient is φ = 128353213440.

The previous prime is 225655330513. The next prime is 225655330577. The reversal of 225655330551 is 155033556522.

It is a happy number.

It is not a de Polignac number, because 225655330551 - 2⁶ = 225655330487 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225655335551) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4763655 + ... + 4810791.

It is an arithmetic number, because the mean of its divisors is an integer number (10794979104).

Almost surely, 2^225655330551 is an apocalyptic number.

225655330551 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

225655330551 is a deficient number, since it is larger than the sum of its proper divisors (119784000777).

225655330551 is a wasteful number, since it uses less digits than its factorization.

225655330551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48191.

The product of its (nonzero) digits is 675000, while the sum is 42.

The spelling of 225655330551 in words is "two hundred twenty-five billion, six hundred fifty-five million, three hundred thirty thousand, five hundred fifty-one".