225728688902 has 4 divisors (see below), whose sum is σ = 338593033356. Its totient is φ = 112864344450.

The previous prime is 225728688893. The next prime is 225728688917. The reversal of 225728688902 is 209886827522.

225728688902 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 209886827522 = 2 ⋅104943413761.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56432172224 + ... + 56432172227.

It is an arithmetic number, because the mean of its divisors is an integer number (84648258339).

Almost surely, 2^225728688902 is an apocalyptic number.

225728688902 is a deficient number, since it is larger than the sum of its proper divisors (112864344454).

225728688902 is a wasteful number, since it uses less digits than its factorization.

225728688902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112864344453.

The product of its (nonzero) digits is 15482880, while the sum is 59.

The spelling of 225728688902 in words is "two hundred twenty-five billion, seven hundred twenty-eight million, six hundred eighty-eight thousand, nine hundred two".