225720133340 has 48 divisors (see below), whose sum is σ = 511489919808. Its totient is φ = 83177078784.

The previous prime is 225720133279. The next prime is 225720133381. The reversal of 225720133340 is 43331027522.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 225720133297 and 225720133306.

It is a congruent number.

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, 732197 + ... + 993756.

It is an arithmetic number, because the mean of its divisors is an integer number (10656039996).

Almost surely, 2^225720133340 is an apocalyptic number.

225720133340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

225720133340 is an abundant number, since it is smaller than the sum of its proper divisors (285769786468).

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

225720133340 is a wasteful number, since it uses less digits than its factorization.

225720133340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1726478 (or 1726476 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 32.

The spelling of 225720133340 in words is "two hundred twenty-five billion, seven hundred twenty million, one hundred thirty-three thousand, three hundred forty".