1227564282025 has 27 divisors (see below), whose sum is σ = 1544415666789. Its totient is φ = 967909488000.

The previous prime is 1227564281987. The next prime is 1227564282053. The reversal of 1227564282025 is 5202824657221.

It is a happy number.

The square root of 1227564282025 is 1107955.

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 755600778009 + 471963504016 = 869253^2 + 686996^2 .

It is not a de Polignac number, because 1227564282025 - 2⁹ = 1227564281513 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 393322465 + ... + 393325585.

Almost surely, 2^{1227564282025} is an apocalyptic number.

1227564282025 is the 1107955-th square number.

1227564282025 is the 553978-th centered octagonal number.

It is an amenable number.

1227564282025 is a deficient number, since it is larger than the sum of its proper divisors (316851384764).

1227564282025 is an frugal number, since it uses more digits than its factorization.

1227564282025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6394 (or 3197 counting only the distinct ones).

The product of its (nonzero) digits is 1075200, while the sum is 46.

The spelling of 1227564282025 in words is "one trillion, two hundred twenty-seven billion, five hundred sixty-four million, two hundred eighty-two thousand, twenty-five".