225685212480 has 336 divisors, whose sum is σ = 955401842304. Its totient is φ = 47617044480.

The previous prime is 225685212421. The next prime is 225685212481. The reversal of 225685212480 is 84212586522.

225685212480 is a `hidden beast` number, since 2 + 2 + 568 + 5 + 2 + 1 + 2 + 4 + 80 = 666.

It is a tau number, because it is divible by the number of its divisors (336).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225685212481) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 168486 + ... + 692645.

It is an arithmetic number, because the mean of its divisors is an integer number (2843457864).

Almost surely, 2^225685212480 is an apocalyptic number.

225685212480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 225685212480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (477700921152).

225685212480 is an abundant number, since it is smaller than the sum of its proper divisors (729716629824).

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

225685212480 is a wasteful number, since it uses less digits than its factorization.

225685212480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 861174 (or 861161 counting only the distinct ones).

The product of its (nonzero) digits is 614400, while the sum is 45.

The spelling of 225685212480 in words is "two hundred twenty-five billion, six hundred eighty-five million, two hundred twelve thousand, four hundred eighty".