225717576420 has 96 divisors (see below), whose sum is σ = 729046821888. Its totient is φ = 51110404992.

The previous prime is 225717576397. The next prime is 225717576431. The reversal of 225717576420 is 24675717522.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 225717576420.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2466382 + ... + 2556261.

It is an arithmetic number, because the mean of its divisors is an integer number (7594237728).

Almost surely, 2^225717576420 is an apocalyptic number.

225717576420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

225717576420 is an abundant number, since it is smaller than the sum of its proper divisors (503329245468).

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

225717576420 is a wasteful number, since it uses less digits than its factorization.

225717576420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5022769 (or 5022767 counting only the distinct ones).

The product of its (nonzero) digits is 1646400, while the sum is 48.

The spelling of 225717576420 in words is "two hundred twenty-five billion, seven hundred seventeen million, five hundred seventy-six thousand, four hundred twenty".