275025261 has 16 divisors (see below), whose sum is σ = 422105600. Its totient is φ = 156025008.

The previous prime is 275025251. The next prime is 275025263. The reversal of 275025261 is 162520572.

It is not a de Polignac number, because 275025261 - 2⁵ = 275025229 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (275025263) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 44191 + ... + 50028.

It is an arithmetic number, because the mean of its divisors is an integer number (26381600).

Almost surely, 2^275025261 is an apocalyptic number.

275025261 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

275025261 is a deficient number, since it is larger than the sum of its proper divisors (147080339).

275025261 is a wasteful number, since it uses less digits than its factorization.

275025261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94368.

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 275025261 is about 16583.8855820944. The cubic root of 275025261 is about 650.3156344770.

The spelling of 275025261 in words is "two hundred seventy-five million, twenty-five thousand, two hundred sixty-one".