225990952121828 has 6 divisors (see below), whose sum is σ = 395484166213206. Its totient is φ = 112995476060912.

The previous prime is 225990952121813. The next prime is 225990952121839. The reversal of 225990952121828 is 828121259099522.

It can be written as a sum of positive squares in only one way, i.e., 160822014759844 + 65168937361984 = 12681562^2 + 8072728^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28248869015225 + ... + 28248869015232.

It is an arithmetic number, because the mean of its divisors is an integer number (65914027702201).

Almost surely, 2^{225990952121828} is an apocalyptic number.

It is an amenable number.

225990952121828 is a deficient number, since it is larger than the sum of its proper divisors (169493214091378).

225990952121828 is a wasteful number, since it uses less digits than its factorization.

225990952121828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56497738030461 (or 56497738030459 counting only the distinct ones).

The product of its (nonzero) digits is 37324800, while the sum is 65.

The spelling of 225990952121828 in words is "two hundred twenty-five trillion, nine hundred ninety billion, nine hundred fifty-two million, one hundred twenty-one thousand, eight hundred twenty-eight".