225720106135 has 4 divisors (see below), whose sum is σ = 270864127368. Its totient is φ = 180576084904.

The previous prime is 225720106121. The next prime is 225720106159. The reversal of 225720106135 is 531601027522.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 225720106135 - 2¹⁹ = 225719581847 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 225720106135.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22572010609 + ... + 22572010618.

It is an arithmetic number, because the mean of its divisors is an integer number (67716031842).

Almost surely, 2^225720106135 is an apocalyptic number.

225720106135 is a deficient number, since it is larger than the sum of its proper divisors (45144021233).

225720106135 is an equidigital number, since it uses as much as digits as its factorization.

225720106135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45144021232.

The product of its (nonzero) digits is 25200, while the sum is 34.

The spelling of 225720106135 in words is "two hundred twenty-five billion, seven hundred twenty million, one hundred six thousand, one hundred thirty-five".