225771602320 has 80 divisors (see below), whose sum is σ = 572846103360. Its totient is φ = 82069056000.

The previous prime is 225771602267. The next prime is 225771602351. The reversal of 225771602320 is 23206177522.

It is a tau number, because it is divible by the number of its divisors (80).

It is a self number, because there is not a number n which added to its sum of digits gives 225771602320.

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, 2463886 + ... + 2553874.

It is an arithmetic number, because the mean of its divisors is an integer number (7160576292).

Almost surely, 2^225771602320 is an apocalyptic number.

225771602320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

225771602320 is an abundant number, since it is smaller than the sum of its proper divisors (347074501040).

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

225771602320 is a wasteful number, since it uses less digits than its factorization.

225771602320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92864 (or 92858 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 37.

Adding to 225771602320 its reverse (23206177522), we get a palindrome (248977779842).

The spelling of 225771602320 in words is "two hundred twenty-five billion, seven hundred seventy-one million, six hundred two thousand, three hundred twenty".