275781325 has 6 divisors (see below), whose sum is σ = 341968874. Its totient is φ = 220625040.

The previous prime is 275781323. The next prime is 275781343. The reversal of 275781325 is 523187572.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 69255684 + 206525641 = 8322^2 + 14371^2 .

It is not a de Polignac number, because 275781325 - 2¹ = 275781323 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (275781323) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5515602 + ... + 5515651.

Almost surely, 2^275781325 is an apocalyptic number.

275781325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

275781325 is a deficient number, since it is larger than the sum of its proper divisors (66187549).

275781325 is a wasteful number, since it uses less digits than its factorization.

275781325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11031263 (or 11031258 counting only the distinct ones).

The product of its digits is 117600, while the sum is 40.

The square root of 275781325 is about 16606.6650776127. The cubic root of 275781325 is about 650.9110105408.

The spelling of 275781325 in words is "two hundred seventy-five million, seven hundred eighty-one thousand, three hundred twenty-five".