228011025025 has 45 divisors (see below), whose sum is σ = 330005643881. Its totient is φ = 156270196320.

The previous prime is 228011025017. The next prime is 228011025041. The reversal of 228011025025 is 520520110822.

The square root of 228011025025 is 477505.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 7839862849 + 220171162176 = 88543^2 + 469224^2 .

It is not a de Polignac number, because 228011025025 - 2³ = 228011025017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 228011024984 and 228011025002.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 116987751 + ... + 116989699.

Almost surely, 2^228011025025 is an apocalyptic number.

228011025025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

228011025025 is the 477505-th square number.

228011025025 is the 238753-rd centered octagonal number.

It is an amenable number.

228011025025 is a deficient number, since it is larger than the sum of its proper divisors (101994618856).

228011025025 is an frugal number, since it uses more digits than its factorization.

228011025025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3936 (or 1961 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 28.

Adding to 228011025025 its reverse (520520110822), we get a palindrome (748531135847).

The spelling of 228011025025 in words is "two hundred twenty-eight billion, eleven million, twenty-five thousand, twenty-five".