52782765025 has 9 divisors (see below), whose sum is σ = 65452053081. Its totient is φ = 42225293040.

The previous prime is 52782765023. The next prime is 52782765127. The reversal of 52782765025 is 52056728725.

The square root of 52782765025 is 229745.

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 2971667169 + 49811097856 = 54513^2 + 223184^2 .

It is not a de Polignac number, because 52782765025 - 2¹ = 52782765023 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 52782765025.

It is not an unprimeable number, because it can be changed into a prime (52782765023) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1125751 + ... + 1171699.

Almost surely, 2^52782765025 is an apocalyptic number.

52782765025 is the 229745-th square number.

52782765025 is the 114873-rd centered octagonal number.

It is an amenable number.

52782765025 is a deficient number, since it is larger than the sum of its proper divisors (12669288056).

52782765025 is an frugal number, since it uses more digits than its factorization.

52782765025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91908 (or 45954 counting only the distinct ones).

The product of its (nonzero) digits is 2352000, while the sum is 49.

Multiplying 52782765025 by its sum of digits (49), we get a square (2586355486225 = 1608215²).

The spelling of 52782765025 in words is "fifty-two billion, seven hundred eighty-two million, seven hundred sixty-five thousand, twenty-five".