225820680352525 has 12 divisors (see below), whose sum is σ = 280315218207924. Its totient is φ = 180464560688000.

The previous prime is 225820680352523. The next prime is 225820680352541. The reversal of 225820680352525 is 525253086028522.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 4366816834249 + 221453863518276 = 2089693^2 + 14881326^2 .

It is not a de Polignac number, because 225820680352525 - 2¹ = 225820680352523 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225820680352523) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4799565856 + ... + 4799612905.

It is an arithmetic number, because the mean of its divisors is an integer number (23359601517327).

Almost surely, 2^{225820680352525} is an apocalyptic number.

225820680352525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

225820680352525 is a deficient number, since it is larger than the sum of its proper divisors (54494537855399).

225820680352525 is an equidigital number, since it uses as much as digits as its factorization.

225820680352525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9599179712 (or 9599179707 counting only the distinct ones).

The product of its (nonzero) digits is 23040000, while the sum is 55.

The spelling of 225820680352525 in words is "two hundred twenty-five trillion, eight hundred twenty billion, six hundred eighty million, three hundred fifty-two thousand, five hundred twenty-five".