225945720000 has 3360 divisors, whose sum is σ = 1181991641600. Its totient is φ = 41057280000.

The previous prime is 225945719929. The next prime is 225945720031. The reversal of 225945720000 is 27549522.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (3360).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 479 ways as a sum of consecutive naturals, for example, 11891879991 + ... + 11891880009.

Almost surely, 2^225945720000 is an apocalyptic number.

225945720000 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 225945720000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (590995820800).

225945720000 is an abundant number, since it is smaller than the sum of its proper divisors (956045921600).

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

225945720000 is a wasteful number, since it uses less digits than its factorization.

225945720000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102 (or 60 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The spelling of 225945720000 in words is "two hundred twenty-five billion, nine hundred forty-five million, seven hundred twenty thousand".