225655657276 has 48 divisors (see below), whose sum is σ = 463837674496. Its totient is φ = 94029056064.

The previous prime is 225655657267. The next prime is 225655657277. The reversal of 225655657276 is 672756556522.

It is a self number, because there is not a number n which added to its sum of digits gives 225655657276.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225655657277) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1397695 + ... + 1550761.

Almost surely, 2^225655657276 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 225655657276, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (231918837248).

225655657276 is an abundant number, since it is smaller than the sum of its proper divisors (238182017220).

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

225655657276 is a wasteful number, since it uses less digits than its factorization.

225655657276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154538 (or 154536 counting only the distinct ones).

The product of its digits is 52920000, while the sum is 58.

The spelling of 225655657276 in words is "two hundred twenty-five billion, six hundred fifty-five million, six hundred fifty-seven thousand, two hundred seventy-six".