275430784225 has 27 divisors (see below), whose sum is σ = 349804844409. Its totient is φ = 215132164800.

The previous prime is 275430784207. The next prime is 275430784267. The reversal of 275430784225 is 522487034572.

The square root of 275430784225 is 524815.

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 90678674641 + 184752109584 = 301129^2 + 429828^2 .

It is not a de Polignac number, because 275430784225 - 2¹⁵ = 275430751457 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 112834005 + ... + 112836445.

Almost surely, 2^275430784225 is an apocalyptic number.

275430784225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

275430784225 is the 524815-th square number.

275430784225 is the 262408-th centered octagonal number.

It is an amenable number.

275430784225 is a deficient number, since it is larger than the sum of its proper divisors (74374060184).

275430784225 is an frugal number, since it uses more digits than its factorization.

275430784225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4978 (or 2489 counting only the distinct ones).

The product of its (nonzero) digits is 3763200, while the sum is 49.

Multiplying 275430784225 by its sum of digits (49), we get a square (13496108427025 = 3673705²).

The spelling of 275430784225 in words is "two hundred seventy-five billion, four hundred thirty million, seven hundred eighty-four thousand, two hundred twenty-five".